This post is literally all spoilers.

The information is pulled from various1 sources2, as well as my personal account of watching the show. It takes the jumbled narrative timeline of the show and re-tells a synopsis of the show in chronological order.

Some of the day-dates are approximated. Others are precise, based on cues shown on-screen. When a character is displaced in time, I’ve parenthetically appended their home year. I’ve disambiguated characters (eg. changing “The Stranger” to his real name) as well, and added some inferential context (eg. who kidnapped Mikkel) that I believe is supported by the narrative.

1953

November ?

The disfigured bodies of Erik (2019) and Yasin (2019) are exhumed at a construction site, the future location of Winden’s nuclear power plant. The police, including a young Egon, are mystified by the boys injuries and “costumes,” especially as the clothes all sport “Made in China” labels. The scene is observed by 9-year-old Helge Doppler.

Helge returns to his family’s mansion (which will become a hotel in 2019), where he is berated and humiliated by his cruel mother for getting dirty.

November 8

Ulrich Nielsen (2019), exits a cave in the forest and encounters the young Helge Doppler, near the Doppler family’s forest cabin, who was just being bullied by two youths. Ulrich (2019) chases the bullies away. Unaware that the boy he has just helped is Helge Doppler, Ulrich (2019) walks into town but a car stops, and a beautiful and elegant woman asks him for directions, which he recognizes as his address in 2019. She introduces herself as Agnes Nielsen, and also her son, Tronte. Ulrich (2019) realizes he is meeting his grandmother and father, and he asks Agnes for the present year, and she responds “1953”.

Astonished, Ulrich (2019) leaves and wanders into the town, where he finds a watchmaker named H.G. Tannhaus. He asks Tannhaus if he is the same author of a book he had taken from the bedside of the elder Helge Doppler in 2019, and Tannhaus, after looking at the author photo which shows an unrecognizably older version of himself, says no.

Two young girls come in (one of whom Ulrich (2019) recognizes as his own mother, Jana) and tell Tannhaus about the discovery of the two boys’ bodies at the construction site. An hysterical Ulrich (2019) runs to the police station, telling officer Egon Tiedemann that his son is missing; however, their description does not match Mikkel (2019), but Yasin (2019) and Erik (2019).

At the Tiedemanns, Agnes Nielsen and Tronte rent a room from Egon and his wife. Agnes says she is a widow, but Tronte has cigar burns up and down his arm. It is implied, though not explicitly stated, that Agnes’s former husband was a priest and may be Father Noah (unconfirmed!).

Young Claudia Tiedemann (who tutors Helge) takes Helge and Tronte on a walk in the woods with her dog Gretchen; the dog goes missing after Helge throws a stick into the cave for it to chase.

Egon’s wife is romantically attracted to the beautiful Agnes.

Ulrich (2019) later happens upon Helge again and realizes who he is, and that in the future he is going to become a murderer. After chasing him down through the woods and initially hesitating, he bludgeons Helge very badly with a rock and drags his body into the empty cellar of the forest cabin. Helge is motionless and bloodied and appears dead.

Tannhaus is closing up his shop when he realizes Ulrich (2019) has left behind his jacket with his smartphone, which Tannhaus figures out how to turn on.

Helge’s mother talks to Father Noah and confides that she never wanted her son Helge and tried to abort him, insinuating he was the result of rape.

Egon spies a blood-covered Ulrich (2019) walking down the street and arrests him for the murder of the two boys as he also confesses to murdering Helge; Ulrich (2019) insists that he murdered Helge and thus the boys could not still be dead.

An elderly Claudia (2019), from the future, enters Tannhaus’s shop with the detailed blueprint for the time machine and asks him to build it for her.

November ?

Ulrich (2019) insists Helge is not dead as the two boys were still killed. Egon and others think he is insane, but take his photograph and interrogate him over Helge’s whereabouts.

November 11

Helge (1986), emerges from his well-lit cellar at the forest cabin and looks sorrowfully at the dead body of Yasin, with burned out eyes. In the cellar, a heavily tattooed Noah scrubs the concrete floor. Noah writes “9/11/53” on the wall, in chalk.

November 12

Helge wakes up, bloodied and alone, in the cellar. There is rumbling, and a wormhole opens up. He sees young Jonas (2019) in the blue-wallpapered room (near the repaired chair), and they reach out to each other. He is transported to the cellar in 1986.

1986

April 26

The Chernobyl disaster happens in Russia.

Unknown

As a prank, Ulrich and Katharina tie Regina Tiedemann to a tree, in front the cave. She hears the rumbling sound of the portal being opened and closed.

October ?

Jana Nielsen sees a man with a deformed ear (Helge Doppler) arguing with a priest (Noah) in front of their house.

Regina, traumatized from being tied to a tree, asks Mads to walk her home. They go through the woods. Afterwards, Mads Nielsen vanishes.

November 4

Erik (2019) is gagged and being strapped to a chair in a room with brightly colored cartoon wallpaper, where the music video “You Spin Me Round” is playing at full blast and Helge Doppler, face obscured with a hood, clamps a mechanism around Erik’s (2019) head, covering his eyes in the same location as the mysterious black burns on the dead boys found in the field in 1953.

November 5

A disorientated Mikkel (2019), dirty and bloody, wakes up in the cave at dawn and runs home, where he finds a 15-year-old Ulrich, who tells Mikkel (2019) to get lost when he claims to live there. Ulrich then leaves for school with his future wife, Katharina, while Mikkel (2019) sees the newspaper outside the door with the date.

A confused Mikkel (2019) walks through his house calling for his mother. Instead he finds his grandmother Jana Nielsen, who reacts hysterically, asking him who he is and if he knows what happened to Mads, who has been missing for a month. Still not understanding the time shift, Mikkel (2019) runs away and goes to the high school to find his mother, the school principal, and then the police station, to find his father. Police officer Egon Tiedemann laughs when Mikkel (2019) says Ulrich Nielsen is his father. Egon, who thinks Ulrich is a troublemaker, suspects Ulrich beat Mikkel (2019) up and forced him to go to the station as a prank. Alone, Mikkel (2019) looks through files on his desk and finds his uncle Mads’ missing person’s report, including a photo of him with the teenage boy he met at his house, identified as Ulrich.

Ines, the nurse, takes him to the hospital, where he tells her he is from the future.

Claudia Tiedemann, Egon’s daughter and Regina’s mother, is hired as the first female boss of the nuclear power plant but is shocked to find that the plant is mismanaged. Outgoing boss Bernd Doppler (Helge’s father) informs her that the public has lost faith in nuclear power, then later sends her to the cave nearby, which is packed with drums marked as nuclear waste.

The power in the town randomly turns off and on. A teenaged Charlotte is curious about the dead birds she finds everywhere, and takes detailed notes, including odd white specks on their feathers. The shy young Hannah has an unrequited crush on Ulrich, while Regina Tiedemann is bullied, suffers from anxiety and cuts herself.

Egon, investigating the mysterious deaths of 33 sheep, is told by the veterinarian that the sheep all died of cardiac arrest, likely caused by a panicked herd, but also with their eardrums ruptured.

That night, Mikkel (2019) escapes from the hospital and runs back out to the caves. Mikkel (2019) falls and injures himself, and hearing the thuds of Ulrich banging on the door (in 2019), calls for help. He and Ulrich are occupying the same space, separated by 33 years, and are unable to see each other.

H.G. Tannhaus, now older and in a white lab coat, surrounded by clocks, is seen tinkering with a very old brass machine.

Mikkel (2019) has returned to the hospital after breaking his leg in the cave. Ines invites a young priest to visit him: Father Noah, who challenges Mikkel (2019) on his belief in the Big Bang theory and evolution.

November 6

Young Hannah, already hurt over Ulrich holding hands with Katharina, spies them having sex in the locker room at school. Hannah then lies and tells her father and the police that she saw Ulrich rape Katharina. Egon, who already believes Ulrich is a punk, has him arrested.

Jonas (2019) emerges from the cave, wandering to a bus stop where to his astonishment, he sees missing flyers for Mads Nielsen. A van drives by and stops: it’s 14-year-old Hannah (his mother) and her father, offering him a ride in the rain, warning him about acid rain from Chernobyl.

November 7

Egon goes to question Helge, who was working at the plant the night Mads disappeared, but Helge postpones the interview to two days later. Helge mentions that he took the state road home, which Egon finds odd, as the forest road was much faster. Helge claimed that he had to stop and buy something, but Egon jots down “Why not forest road?” in his notes.

Jonas (2019) locates Mikkel (2019) at the hospital, but is stopped by future Jonas (2052), warning him that he cannot take Mikkel (2019) back or interfere with his new life in the 1980s, or Jonas will be never be born.

Katharina tries to convince Egon that Ulrich never raped her, but he does not believe her (especially as she has a black eye from her abusive mother).

Jonas Kahnwald (2052) meets with H.G. Tannhaus, who shares his 33-year-cycle theory, including the existence of time travel through a wormhole. Jonas (2052) then informs him that it is true, and that he traveled there through such a wormhole that allows people to travel 33 years into the past or into the future. He brings out the old brass device, now broken, and asks if Tannhaus can fix it. Tannhaus, incredulous, asks if he wants to use it to create another wormhole. Jonas (2052) says no, he wants to use it destroy the current one. Tannhaus forces him to leave, but then brings out the still new version he has in flawless working order and studies them side by side.

November 8

Claudia learns from Bernd that the barrels are stored with the byproduct of a small meltdown. While inspecting the caves, she is shocked to find Gretchen (1953), her childhood dog, run up to her, still wearing her tags.

Helge, at the cabin, dodges Egon Tiedemann by hiding out of sight while Egon peers in through the window.

Ulrich is released from jail; Hannah suggests to Katharina that it was Regina who made up the story of the rape to Egon Tiedemann (her grandfather). Katharina attacks Regina in the woods but is stopped by a teenaged boy, who pulls a gun on Katharina and Ulrich to chase them off. Regina offers to help the boy; he says his name is Aleksandr, but he later returns to the forest to bury a bag with the gun and a passport with his photo issued in Giessen (showing his name Boris Niewman), while he keeps another passport issued in Marburg in the name of Aleksandr Köhler, age 21, with a photo of a different young man. Hannah secretly watches him bury it.

Regina sends Alexsandr to the power plant to see if her mother can hire him. Claudia at first declines, then offers him a top-secret job in the cave.

In the cellar, Helge and Father Noah work on repairing the chair, and Helge says he doesn’t want to keep trying. Noah claims the chair is the Ark and he is Noah, and they can change everything with it.

Tannhaus works to repair his machine.

November 9

Helge (2019) emerges from the cave and confronts his younger self, telling him to stop listening to Noah, who is not of God but of the Devil. Younger Helge doesn’t listen to his older self and returns to Noah, who looks through a book for their next target: Jonas Kahnwald.

November 12

Jonas (2019) goes to Mikkel’s (2019) hospital room, where Noah is sitting next to Mikkel’s (2019) bed. Helge appears from behind the door and knocks Jonas unconscious with a rag of ether.

Helge (2019) collides at full speed with his younger self at an intersection. The elder Helge (2019) dies at the scene.

Jonas (2019) awakes in the cellar of the Doppler forest cabin with its repaired chair. Future Jonas (2052) talks to him through a hole in the door and tells him that the chair is a prototype for a time machine, and informs him of his real identity: He is Jonas from the future. He tells him that younger Jonas (2019) must stay there while he destroys the timehole using Tannhaus’s brass machine, which he has equipped with radioactive cesium from the barrels he stole from a truck in 2019.

Jonas (2052) goes to the caves, through the door, and saets up Tannhaus’s machine. As he ignites the machine in the caves, he sees his father, smeared with a dark substance (possibly blood or paint), sitting next to him. It’s unclear if this is a hallucination or if that is a corporeal person.

A wormhole opens in the cellar through which young Jonas (2019) sees young Helge (1953), sitting in the cellar. They reach out to touch hands. Jonas (2019) vanishes (sent to 2052) and young Helge (1953) takes his place in 1986, waking up on the floor of the blue-wallpapered room, dressed in clothes from the 1950s, face bloodied.

Ines Kahnwald adopts Mikkel and takes him home.

1987

Unknown

Peter Doppler moves to Winden to be with his father Helge, who is still recovering from his car accident. Sometime after this, he meets Charlotte (a local), and they later have two children: Franziska and Elisabeth.

2019

June ?

Jonas’s father Michael Kahnwald (adult version of Mikkel) hangs himself. He leaves an envelope, with instructions that it is not to be opened until 4 November at 10:13 p.m.. His adoptive mother, Ines Kahnwald, takes it before his family can find it.

Jonas Kahnwald is admitted to a psychiatric facility, where he is treated by Dr. Doppler. He is experiencing hallucinations of his father.

October 22

Erik Obendorf, the main supplier of weed at the high school, disappears without a trace. Officer Ulrich Nielsen has been assigned as the investigator. There are few clues, other than Ulrich’s brother Mads had similarly disappeared 33 years prior. Ulrich’s now-aged parents (Jana and Tronte) never got over the disappearance; his mother sees strange people in the woods (Helge (1986) and Noah?) and his father mysteriously predicts “It’s going to happen again”.

November 4

Jonas, returns to school on. His friend, Bartosz, has told everyone Jonas was studying abroad in France, but Bartosz is now dating Jonas’ love interest, Martha Nielsen (Ulrich’s daughter), while Jonas’s mother, Hannah, is having an affair with married police officer Ulrich Nielsen, father of high schoolers Magnus and Martha and pre-teen Mikkel.

Jonas, Bartosz, and the three Nielsen kids go to the forest caves after dark in the hopes of finding Erik’s stash of drugs while their parents hold a town meeting to discuss the disappearance. The group has a small altercation with fellow classmate Franziska Doppler (Dr. Peter & Officer Charlotte’s daughter) in the woods before a loud and disturbing roaring from the cave sends them running. It is now after 10:13 and elsewhere, Ines opens the letter. Jonas trips running away and believes he hallucinates his father, smeared with a black substance — it’s the same visage that his older self just saw in the wormhole in 1986. Mikkel vanishes.

Dr. Peter Doppler is parked in his car, tempted to visit the male prostitute, but instead he goes to the cellar of the family forest cabin and says the Serenity Prayer. He is shocked when there is a flash of light and a young boy’s body falls through the ceiling. After attempting CPR, Peter realizes the boy is dead and finds his school ID, identifying him as Mads Nielsen (1986). He calls Tronte, who sobs in disbelief over his son’s body. An elderly Claudia Tiedemann (2019) then walks in, telling them they must hurry and move Mads’ (1986) body to where he will be found.

November 5

The next day, the body of a young boy is found in the forest, with a burn banded around his head, covering his eyes and ears. It is not Mikkel, but rather Mads (1986).

Jonas continues to have disturbing visions and dreams. Mikkel’s disappearance opens old wounds for his family.

Ulrich, who initially thought Eric was a runaway, now believes the disappearances of Eric, Mikkel and the body of the third boy (who he later learns is his brother, Mads (1986)) are all related. Ulrich searches the cave and finds a locked door that leads to the nearby nuclear power plant. The coroner informs Ulrich’s partner, Charlotte Doppler, that the dead boy’s ears were destroyed by extreme pressure, as if by centrifuge, which would have destroyed his spatial awareness and orientation. The boy had been dead only 16 hours, but he had also been dressed in clothes from the 1980s, and he had a Walkman and 1986 pfennig on him, as well as red dirt not from the forest (it was from the Doppler’s family cabin).

An older, time-displaced, Jonas Kahnwald (2052), wearing a hood with a dirty face, checks into the hotel owned by Bartosz’ mother, Regina Tiedemann. Hannah goes to the police station to talk to Ulrich, but he tells her he can’t be with her right now.

Jana Nielsen, Ulrich’s mother, asks her husband, Tronte, where he was in the middle of the night (when Mikkel disappeared) and he claims he had to go to the store. She later lies to Ulrich and claims Tronte was there with her. Power plant boss Aleksander Tiedemann refuses to allow Ulrich to enter the property, citing security regulations. Ulrich is suspicious of Erik’s father, Jürgen, a slow-witted man who works as a driver part-time for the plant. He breaks into Jürgen’s shed and discovers a stash of drugs that Jürgen admits selling with his son, and Ulrich feels pity for him.

An unseen figure (Helge Doppler (1986)) drags the body of a young man, with bright red hair like Erik, out into the woods. Lights flicker on and off in Winden, and birds fall dead from the sky, disturbing Charlotte.

Ulrich goes to the cave with a crowbar to open the locked door; unsuccessful, he begins banging on it in frustration. He hears Mikkel’s faint calls, echoing from 1986.

Jonas finds his father’s maps of the cave in their garage. He studies them, finding them covered in copious notes, including the question “Where is the crossing?”

Charlotte is sure the death of the birds and the disappearances of the boys is related to what happened 33 years earlier. The coroner tells Charlotte the birds also had burst ear drums, but likely died after becoming disoriented. She also tells her that the white spots were genetic mutations first seen after Chernobyl, but that radiation levels were currently normal. While viewing traffic camera footage from the night of Mikkel’s disappearance, she spots her husband Peter driving, although he told her he had been at the office until late that night. Charlotte then goes to visit the transvestite male prostitute that her husband had been seeing, who mocks her. Charlotte then goes to her father-in-law Helge’s forest cabin, where she finds the familiar red dirt.

Magnus is suspicious of Franziska Doppler and follows her out to the forest, where she retrieves something from a canister buried under the railroad tracks. After her gymnastics practice, Magnus confronts her in the locker room where he has found the stash of money. She says she wants to leave Winden because of all the liars, including her parents, who haven’t slept in the same room in a year since her mother discovered her father was gay, but yet they pretend everything is OK. Magnus kisses her and they have sex in the locker room.

After Ulrich is busted breaking into the power plant, Charlotte goes to retrieve him, but first calls Peter to ask him to pick up their 8-year-old daughter Elisabeth, who attends a school for the deaf. Tired of waiting, the precocious Elisabeth decides to walk home herself, sparking a panic when she can’t be found. Helge Doppler, now suffering from dementia, manages to walk out of the nursing home without being noticed.

Later that night, Elisabeth returns home and signs that she walked home but met someone on the way named Noah. She signs that Noah gave her a gold watch, which he said used to belong to her mother. The police, looking for Elisabeth, find Helge walking around disoriented. He says over and over that he must stop him: Noah.

November 6

In the morning, Yasin, Elisabeth’s friend from the school for the deaf, walks through the forest on his way to school and comes across the hooded man (Helge Doppler). He tells the young boy, “You must be Yasin. Noah sent me.”

The disappearance of 9-year-old Yasin causes panic in Winden, where reporters flock to cover the story of the missing boys. Charlotte confronts Peter over his lie about where he was when Mikkel disappeared. She begs him to tell her he had nothing to do with the boys’ disappearance; he tells her she is crazy.

Hannah takes her obsession with Ulrich too far when she brings food over to the house as an excuse to see him, making Katharina suspicious. Ulrich tells her to leave him alone and that their affair is over, but Hannah refuses.

Martha is torn between Jonas and Bartosz and is avoiding Bartosz. Bartosz, however, receives a call from Noah. Bartosz later tells Jonas that he got in touch with Erik’s dealer and is going to meet him that night, and Jonas agrees to come. Jonas goes to his father’s grave, where he meets with adult Jonas (2052), who tells him that long ago their father saved his life.

Charlotte tells Ulrich about the 33-year theory, that each year is not exactly 365 days and every 33 years time realigns and resets itself. She says her grandfather was obsessed with it. (unclear if Charlotte is descended from Tannhaus or not)

Jonas goes to watch Martha perform in a play that night, where he confesses that he wasn’t really in France, and leaves Bartosz to meet the drug supplier on his own. When Noah arrives, it is the same priest who visited Mikkel in 1986, and who matches the photofit from Elisabeth’s description.

November 7

At the hotel, future Jonas (2052) tells Regina he is going away for a few days but will be back, and also asks Regina to deliver an important package addressed to present-day Jonas.

With three boys now missing, Charlotte instructs the police department to comb every corner of town and every case in the archives for clues.

After listening to audio interviews from Mads’ disappearance, Ulrich confronts his mother, who lied to the police when she said her husband had been home the night their son disappeared. She confessed it was because he was having an affair — with his boss, Claudia Tiedemann. Regina, she says, was the last one to see Mads. Ulrich confronts Regina, who he long believed to be the one who made the false rape accusation against him. Regina tells him it was Hannah, which he confirms in the original police report. Regina blames him for Mads’ disappearance in 1986 (ie. if Ulrich hadn’t traumatized her, she wouldn’t have needed Mads to walk her home).

After studying the files and old photos of Mads, Ulrich goes to the morgue to take a closer look at the body of the unidentified boy, and is shocked to see the same scar on his chin as the one Mads got from a fight they once had.

Jonas arrives home to find the package waiting for him. It contains a mysterious light, a Geiger counter, and the suicide note from his father, Michael, except the paper and enveloped have faded as if decades have gone by rather than months. The letter explains that on 4 November 2019, he traveled back to 1986, where he stayed and grew up, changing his name to Michael, raised by Ines, eventually marrying Hannah and fathering Jonas. He signed the letter “Mikkel/Michael.” Jonas asks his mother questions about his father but can’t bring himself to tell her about the letter.

Armed with new tools, including the radiation detector and notes on the maps, Jonas probes the cave’s murky depths. He finds a door with a Latin phrase Sic Mundus Creatus Est (“Thus the world was created”). He crawls through to the other side, travelling back in time to 1986.

Regina and Aleksander react to her late-stage breast cancer diagnosis.

November 8

The police finally get a search warrant for the nuclear plant.

Charlotte explores the caves on the Nuclear plant property, finding flecks of yellow paint as well as a locked metal door.

Ulrich looks through Egon’s notes from 1986 and sees that Helge never showed up for his interview with Egon, and he finds the question about forest road very suspicious. Ulrich questions a frail and frightened Helge in the nursing home. Helge says he can change the past and future before Ulrich is removed by the staff. Charlotte suspends Ulrich, who claims Helge may not be working alone, but she is perturbed when he mentions “Why not forest road?” Maps show that the cave system goes beneath the forest road to the location of Helge’s old cabin.

Charlotte questions Peter about the cabin, but Peter says he did not move to Winden until 1987 to be with his father after the car accident. Charlotte goes to the cabin and looks in the abandoned cellar, where she finds among the dirt a piece of light blue wallpaper from that room in the 80s.

Katharina forces Ulrich to admit to the affair with Hannah. He visits his mother, who tells him that she now remembers seeing Helge argue with Noah in 1986. She never thought of it again until that morning, when she saw the same man, Helge (1986), and that he had not aged a day. Ulrich realizes the murderer is Helge (1986) and leaves a voicemail for Charlotte, saying the question is not how he is abducting the boys, but when.

Late at night, Ulrich sneaks into the nursing home but finds Helge missing. He takes a copy of the book “A Journey Through Time” by H.G. Tannhaus. He notices an open door and sees Helge wandering into the woods. Ulrich follows him.

Ulrich Nielsen goes into the cave and discovers the Sic Mundus Creatus Est door and passes to the other side.

November 9

Hannah takes out Alexsandr’s bag he had buried with the gun and passport that she had since hidden in her house.

Katharina, who thinks Ulrich must be there, shows up and lashes out at Hannah. Hannah claims she ended things with Ulrich, who had wanted to leave Katharina because he really loved Hannah.

Hannah brings Alexsandr’s distinctive bag to her massage appointment with him, telling him the contents are safely kept somewhere else. She tells him she doesn’t want money, but she will keep quiet as long as he destroys Ulrich’s life. Aleksandr calls his confidante, eyepatched police officer Torben Wöller, and tells him dig up what he can on Ulrich and that they would soon be able to return the barrels, which are stored in a large truck that is parked near the Transvestite Prostitute’s trailer.

However, Jonas Kahnwald (2052) gets to the truck first and opens one of the barrels, intending to store some of the material (radioactive Cesium) in a vial.

Regina is shocked as she enters Jonas’s (2052) room at the hotel to see the walls plastered with papers of his copious notes on time travel, including newspaper articles on Mikkel.

November 10

Jonas pushes Martha away without explanation, as he now knows she is his aunt. He burns the aged letter from his father that was given to him in the package from future Jonas (2052).

To Bartosz’ surprise, an elderly Claudia (2019) shows up at his house, introducing herself as his grandmother he thought was dead. Bartosz meets again with Noah and tells him that everything Noah predicted since they first met had come true, and he agrees to do what Noah wants.

November 12

Jonas confronts Ines about his father and what she knew. She gives him the suicide letter, which he is shocked to see as he burned it. This letter was only weeks old.

Charlotte confirms from Peter that his father, Helge, was kidnapped as a child in 1953, which relates to her 33-year-cycle theory. While looking through old newspapers, she finds an article on the kidnapping with a photo of the suspect: Ulrich (from 2019, visiting 1953).

Jonas goes back to 1986, determined to bring Mikkel back even if it erases his own existence.

Noah meets with Bartosz and tells him that Jonas (2052) is wrong, that while he thinks he is going to destroy the wormhole with the machine, he is in fact going to be creating it instead.

2052

Unknown

Jonas (2019) instantly wakes up, as if from a dream. He wakes up in a room with the photos of all the interconnected people from Winden, including photos of himself as a teen (2019) and adult (2052).

As he exits, Winden has changed. It is now a post-apocalyptic world, with burned out cars and warning signs in multiple languages. A truck pulls up full of armed individuals who pull their guns on Jonas (2019). He begs to know what year it is, while a futuristic aircraft flies slowly overhead. A teenaged girl tells him, “Welcome to the future” and knocks him out with the butt of her rifle.

Footnotes

1. Dark (TV Series) on Wikipedia
2. /r/dark on Reddit (Many thanks for their feedback)