As Los Angeles cops raid his illegal gambling yacht, owner Jim McFee shoots and kills his double-crossing watchman. To cover for his boss, one of McFee's employees, Ronny Hillyer, grabs the gun and dives overboard. While a police manhunt scours the waterfront, Hillyer hides out in a nearby houseboat, disguised as a sailor. He's in no hurry to skip town after meeting and falling in love with beautiful Joan O'Brien. The hunted man has more to worry about than the police - Joan's rival suitor is getting suspicious about Hillyer's true identity.