In this high-seas adventure, a woman creates a great rift between old friends: an experienced older diver, and his younger protege. They become enemies when a gold-digger marries the latter. She soon leaves him in favor of a wealthy yachtsman. She is aboard his boat when an accident occurs. The two divers must salvage the costly boat before it sinks.

Tempress Vivian Marsh (Betty Bronseon) lures Tom Evans (Jack Mulhall) away from stenographer Connie Lee (Constance Cummings), the girl he really loves. Connie, on the rebound, has an affair with her married boss Yates (Jameson Thomas). Vivian, not content with her successful conquest of milquetoast Tony, decides to have a romantic liaison with Yates as well. Tony discovers her infidelity, gets a divorce, and returns to Connie, who is a bit less pure than when he abandoned her.

A policeman, working on a case against a local mobster and his gang, slips on some race-car-driver overalls and goggles and, in addition to stopping the mobsters in their tracks, wins a few races and the love of the daughter of the racetrack owner.