When a high school senior is dumped by her boyfriend, her grades fall drastically...to avoid failing, she begins seducing her male teachers. Thus begins her downward spiral into drug addiction and prostitution, and ultimately assassinations for a kingpin mob boss.

A San Francisco hood is rubbed out by rival Bruno Felkin, who himself reports the crime to Homicide Lt. 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. Climax in a storm at sea.