The apocalypse will happen in both worlds, if Adam has his way.
Jonas returns to 2020 to save everyone. Things go terribly wrong. Or, do they?
Jonas learns more about the Apocalypse from Adam.
In '87, Claudia meets herself. In 2052, Jonas is caught trying to get into the dead zone.
In 2052, Jonas seeks answers. In 2019, Winden deals with the missing six. And in 1921, Noah meets himself.