In 2019, Jonas emerges from the cave into a different but not unfamiliar world: The town of Winden reeling from the recent disappearance of a young boy.
Charlotte and Ulrich try to piece together what happened in the bunker. In different times and worlds, Jonas and Martha work to gain each other's trust.
Jonas and Martha travel to the year 2052 and get a glimpse of a grim future. In 1954, two residents of Winden go missing, and Hannah receives surprising news.