Biff Jones is a driver/salesman for the Good Humor ice-cream company. He hopes to marry his girl Margie, who works as a secretary for Stuart Nagel, an insurance investigator. Margie won't marry Biff, though, because she is the sole support of her kid brother, Johnny. Biff gets involved with Bonnie, a young woman he tries to rescue from gangsters. But Biff's attempts to help her...