When Adam convinces Wiley to escape, they learn whether they are truly contagious to outsiders. Chuck devises a daring escape plan of his own.

Liam must use science to prove his good intentions. When Renee reappears, Ronnie finds out what she really wants. Franny breaks away from Gord.

Ronnie discovers a commune of survivalists. Wiley is forced to make a heartbreaking choice about her son. Adam investigates Liam's background.

Franny reviews security footage for answers. Recent events take a psychological toll on Chuck. To test the cure, Liam hunts for someone turning 22.

Adam seeks an outside expert to get the leverage necessary to force the government's hand. Renee makes a move to reclaim her command of the commune.

As Adam steps up his game to negotiate an extraction, one last bargaining chip is played to win Renee's cooperation, but it could cost Mark's life.