Between is the story of a town under siege from a mysterious disease that has wiped out everybody aged 22 and older. The series also explores the power vacuum that results when the government quarantines the town within a 10 square mile diameter and leaves the inhabitants to fend for themselves.
Adam and Wiley take a risk. Chuck and Harrison form an alliance. Mark makes a crucial mistake. Gord tries to gather resources. Ronnie meets a stranger.
After his failed escape plan, Chuck returns to find that Wiley and Adam have brought in a scientist; Gord and Franny argue over resources; Ronnie helps Renee find her brother; Mark wants to confess to a killing.
Ronnie discovers a commune of survivalists: Wiley is forced to make a heartbreaking choice about her son. Adam investigates Liam's background.
Granny 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.