Hoping to relax for the day, beatniks Jerry, Angela, and Harold head for a seaside carnival. But after visiting strange fortune-teller Madame Estrella, Jerry is transformed into a ruthless killer with a penchant for performing song and dance at the park's nightclub. And as if Jerry's attacks along the beach weren't enough, Madame Estrella inadvertently unleashes a horde of undead minions on the unsuspecting carnival populace.