New misfits Finn and Jess zip up their jumpsuits for their first day of community service, but things get strange when a man stumbles into the community centre with a power that infects the whole gang.

Finn isn't as innocent as he looks: a dark secret he's been hiding at home is revealed. Can Seth be persuaded to come out of retirement and take a power before someone gets forced into submission?

Can Rudy and his downbeat doppelganger put aside their differences to confront a dangerous face from their past?