A San Francisco hood is rubbed out by rival Bruno Felkin, who himself reports the crime to Homicide Lieut. Kelsey in an alibi scheme which fails. To escape, he stows away on a fishing boat. At sea, skipper Hamil Linder receives Bruno kindly, teaching him fishing; Bruno enlists Hamil's wayward son Carl to tend his slot machines. Then Carl takes an interest in Bruno's girl Connie.