Road to Mars
Emilia, who suffers from a terminal illness, embarks on a journey with her best friend Violeta. On their way they meet Mark, who claims to be an alien on a mission to destroy the planet for considering humanity (and love) a virus. However, Mark begins to doubt his mission falling in love with Emilia.
Icarus
Truth is the new banned substance
Icarus
Truth is the new banned substance
Alpha and Omega
Peter gets a shock. Jonas learns the truth about his family, but there are more surprises still to come. Helge makes a sacrifice.
Everything Is Now
Ulrich runs afoul of the law, Helge tries to dodge Egon Tiedemann, Claudia harnesses the cave's powers, and Katharina lashes out at Hannah.
As You Sow, So You Shall Reap
In 1953, the disfigured bodies of two boys are exhumed at a construction site, the future location of Winden's nuclear power plant.
Crossroads
Ulrich questions a frail and frightened Helge in the nursing home. Jonas searches for Mikkel, but the stranger warns him about meddling with the past.
Sic Mundus Creatus Est
Ulrich looks to the past for answers and dredges up disturbing family secrets. Armed with new tools, Jonas probes the cave's murky depths.
Truths
Hannah takes her obsession with Ulrich too far. The stranger asks Regina to deliver an important package. Martha is torn between Jonas and Bartosz.
Double Lives
Bizarre occurrences give Charlotte a sense of déjà vu, and she suspects Peter is hiding something. Franziska snaps when Magnus confronts her.