Police arrest Chubasco, a wild 20-year-old, and his girl friend Bunny when a gang of motorcyclists ride through a California beach party. Bunny is bailed out by her irate father, Sebastian, and the sympathetic judge prevails upon executive Nick Kassel to find work for Chubasco aboard one of his tuna boats. Despite his rebellious attitude, Chubasco wins the approval of Captain Laurindo. Later, Chubasco goes to work for an elderly skipper, Benito, who takes a paternal interest in him and helps him to arrange an elopement with Bunny. The wedding, which takes place in a brothel owned by Benito's friend Angela, is a raucous affair which ends sadly when Benito suffers a fatal heart attack. Chubasco ships out on another tuna boat and leaves Bunny in the care of Angela. Although Chubasco's new skipper turns out to be Bunny's father, the two men get along well enough until Sebastian learns that Chubasco has married Bunny. Unwilling to accept the young man, he attacks Chubasco but is himself knocked overboard during the fight. Despite Chubasco's saving his life, Sebastian vows to put him ashore at the next port. When Chubasco accidentally falls over the side, Sebastian rescues him. The two men are united by the incident, and when their ship reaches port, Sebastian smiles as Chubasco embraces Bunny.