In need of money after damaging their dad’s truck, Sterling and Blair team up with veteran bounty hunter Bowser to help capture a frenemy’s father.

When her friend and co-worker is stricken with the green flu, Abby searches Alec’s lab for a cure, but instead finds the latest supernatural reanimation from the Rot.

Black Lightning is recruited to rally against The 100 gang. Anissa investigates the new drug hitting the streets. Meanwhile, familiar faces begin to reappear.

Barbie turns to his father for help contacting Julia but realizes that he may not be trustworthy; Big Jim declares himself sheriff of Chester’s Mill.

Big Jim finally learns what happened to his wife, Pauline; Chester’s Mill faces a new threat — climate change.

Rebecca and Sam try to save Chester’s Mill residents as temperatures plunge; Barbie puts his life at risk to help Julia after a terrible accident.

Rebecca and Big Jim consider extreme measures as the conditions worsen in Chester’s Mill; clues about Melanie’s connection to the dome are revealed.

Joey is chosen to be part of a group of students to paint a school mural, but when hers is defaced before the unveiling, Dawson offers words of encouragement while…