One year after the dome disappears, Barbie, Joe, and the other townspeople gather for a memorial. Meanwhile, a year earlier, Julia and Junior try to rescue Barbie and the others, but run afoul of Big Jim.
Barbie investigates Ben's claim that something strange is going on in Chester's Mill, but Eva surprises him with unexpected news. Meanwhile, Norrie and Hunter grow closer, and Christine advises Joe to move on.
In the aftermath of the townspeople's experiences in the other reality, people begin acting strangely and Big Jim suspects that something has fundamentally changed the others. Meanwhile, the person responsible sends Melanie to kill Julia.
-- Do You Wanna Dance?
While Christine "guides" the townspeople in rebuilding their homes and finding food, Big Jim is abducted by an Aktaion research team. Meanwhile, Julia and Barbie have a falling out and Julia goes to Bird Island, and Norrie begins reverting to her old self.
Christine sways Eva back to her side with Junior's help, and takes steps against those resisting her attempts to bind the townspeople into a kinship. Meanwhile, Big Jim convinces Julia to help him recover the camera showing that Christine is possessed by the alien life force.
While Christine tries to convince Big Jim to help her escape Aktaion, Julia tries to convince Barbie that Christine and Eva aren't what they seem. Meanwhile, Joe and Norrie rescue hunter when the Kinship prepares to kill him now that he is crippled and a drain on their resources.
A meteor storm comes down outside of the dome, leaving the people of Chester's Mill to contemplate what to do next... and how to fight the Kinship.
Big Jim, Julia, Joe, Norrie and Hunter join together to form a resistance against Christine, who is mobilizing residents to work on a massive excavation project in the caves underneath the town. Also, Hunter uses his tech skills to contact the outside world.