Shawn and Gus return to Santa Barbara, California to help their old police chief, but find themselves unwelcome in their old stomping ground as they secretly untangle a case that involves the supernatural.

The old gang comes together during the holidays after a mystery assailant targets one of their own.

In preparation for a shotgun wedding before the birth of Baby Guster, Shawn and Groomzilla Gus go rogue in an attempt to track down Selene's estranged husband, as Lassiter grapples with the future of his career.