Linc's Stinkweed reign is challenged; Dwayne eyes Shaun's online future; Dr. Smith tends to an ailing Palaka; Ramon supervises the building of a shuffleboard court.
Just north of the border, in the tired coastal town of Imperial Beach, California, the lives of three generations of surfers are upended by the appearance of a mysterious stranger.
After enlisting a young woman, to infiltrate the Yost inner circle, Linc pays Mitch a visit, looking to sponsor Shaun and promising not to resort to "bad boy" image tactics. Mitch allows Shaun to compete in a Huntington surfing competition, with unexpected results.
A kiss from Zippy convinces Dr. Smith that a paranormal phenomenon has occurred among the Yosts. Bill interrogates interlopers outside the Yost house. Kai tests John to see if he's a man of his word. Mitch is comforted by Cass, unaware of her connection to Linc.
John gets roughed up by some thugs; Kai connects with Butchie; Vietnam Joe brings Dr. Smith a new patient; Shaun's adult-film star mother Tina arrives in Imperial Beach.
Bill gets a strange mandate from Zippy; Tina lets the Yosts know she's back in town.
Butchie orchestrates a reunion between Shaun and Tina; John helps Bill and Cissy face up to their pasts.
An ominous message from John strikes fear for Shaun's safety into the hearts of Imperial Beach denizens.
Attempting to conjure some courage, seeks helps south of the border; Cissy heads up a citywide search team to find Shaun; Bill loses a trusted source of information; Palaka's good-luck gift to Freddy ends up with an unintended recipient.
Butchie and Kai wake up to a joyous revelation; Imperial Beach plays host to a makeshift parade organised by a revamped Stinkweed.