On the day of the apocalypse, Clausen executes a search warrant at the power plant as Jonas and Claudia use the time machine to connect past and future.

Armed with a plan to prevent the apocalypse, Jonas travels to 2019. During the Nielsens’ anniversary party, Ulrich sneaks off with Hannah.

Claudia reveals to Adam how everything is connected — and how he can destroy the knot.

Adam holds Martha captive in 2020. On the day of the apocalypse, an increasingly frantic Martha begs Bartosz for his help.