Dark

About the series

Contains story spoilers.

Dark opens in Winden in 2019, after Michael Kahnwald dies by suicide and leaves a letter Jonas is told not to open until a particular date. When schoolboy Erik Obendorf disappears and Mikkel Nielsen vanishes during a nighttime trip to the caves, the search pulls Jonas and his classmates into the woods. Mikkel emerges in 1986, where nurse Ines Kahnwald takes him in and he grows up as Michael, Jonas’s father. That connection makes the missing-child mystery a family-history problem: Jonas is looking for a boy who will become the parent he has just lost. The search involves police, parents and teenagers, but the show repeatedly turns a clue about a disappearance into a revelation about who belongs to which family.

Ulrich follows an elderly Helge through the caves and emerges in 1953 rather than the time he expected. He first encounters Helge as a child without recognising him, then meets younger versions of his father Tronte and grandmother Agnes. Once he understands where he is, the possibility of preventing the disappearances becomes frighteningly direct. He shows clockmaker H. G. Tannhaus a book Tannhaus has not yet written, then hears about two dead children and demands answers from the police. Believing the young Helge will grow into the man involved in the killings, Ulrich chases him through the woods and strikes his head with a rock. He leaves the injured boy in the bunker. A father seeking his missing child has now attacked another child, trying to eliminate a future he believes he already knows.

Charlotte’s investigation brings the family mystery into her own past. Working with the newly appointed Clausen, she questions Regina and finds material connected to the Stranger among the belongings he left at the hotel. Documents from the man who raised Charlotte deepen her uncertainty about her upbringing. Noah tells her that he is her birth father but withholds the identity of her mother. The answer eventually reveals a loop within the family itself: Elisabeth is both Charlotte’s daughter and her mother. Elsewhere, the adult Jonas proves time travel to Hannah by taking her to see Mikkel in the 1980s. Katharina learns that her missing son is alive in the past, but the revelation that he becomes Jonas’s father disrupts her understanding of both families. Discovering the truth offers a route to searching for Mikkel without making the relationships it exposes any easier to accept.

The second season moves toward the 2020 apocalypse while widening the cycle into 1921 and 2053. Jonas learns more about Adam’s plan and about his own future, but knowing that he will become the man he fears does not give him freedom from that path. In the post-apocalyptic future, Elisabeth Doppler leads a guarded community around the ruined plant; Jonas’s attempt to reach the God particle shows how the disaster has reshaped survivors’ beliefs and authority. Back in 2020, Claudia tries to protect her daughter Regina and manipulate events around the plant. Charlotte’s police inquiry continues through the present-day strand, while an older Ulrich is confined in a psychiatric hospital in 1987 after decades of imprisonment following his attack on Helge. The season ends as catastrophe arrives and a second Martha appears from another world, changing the question from when people can travel to whether Winden has one history at all.

The final season introduces a parallel world and an older Martha called Eva, whose actions sustain the cycle Adam wants to annihilate. Claudia refuses both alternatives because Regina dies within either world. She discovers a third reality: the origin world, where clockmaker H. G. Tannhaus loses his son Marek, daughter-in-law Sonja and infant granddaughter Charlotte in a road accident. His attempt to undo their deaths splits that reality into the two tangled worlds. The conflict has been fought around the wrong origin, making the grief of a father outside both worlds essential to understanding how they began.

Claudia explains the origin to Adam, who sends Jonas to collect the other Martha. They reach the origin world and stop Marek’s car before it reaches the fatal bridge. Hearing that the road is closed and that his father loves him, Marek turns back to reconcile with Tannhaus. Without the family’s deaths, the experiment never creates Adam’s and Eva’s worlds, and Jonas and Martha disappear along with them. The closing dinner takes place among people whose lives survive outside the knot. Hannah, expecting a child with Wöller, experiences déjà vu and considers naming the baby Jonas.

Baran bo Odar and Jantje Friese created the German series, with Louis Hofmann as Jonas, Oliver Masucci as Ulrich and Jördis Triebel as Katharina. Different ages of the same people occupy the story simultaneously, so recognising a face is only the beginning of identifying where that person belongs. Netflix presents three seasons, with the mystery moving from the missing children and the cave passage toward the apocalypse and finally the parallel worlds. The recurring family names matter because relationships connect discoveries that initially appear separate: a missing boy, a parent’s suicide, a police investigation and a scientist’s work can all belong to the same chain.