Julia uncovers the truth about her husband's disappearance and unravels some of Chester's Mill's darkest secrets. Meanwhile, Maxine shows Barbie how she plans to take control of the town.

When Big Jim is captured by Aktaion, the dangerous private corporation that’s descended on Chester’s Mill to harness the Dome’s energy capabilities, he’s forced to manipulate Christine for information about her agenda. Also, when Joe and Norrie question the town’s new rules, they find themselves in a dangerous face-off with the increasingly unstable residents.