A San Francisco private eye finds himself under suspicion while investigating a prizefighter's murder.

Two ex-cons plan to kill the range rider marshal who sent them to prison and, when their plan fails, join forces with their former boss, a crooked saloon owner who has the same idea.

Swaying between pleasure and despair, Elric throws himself into his pathological passion for the casino. Meeting Suzie could have saved him, but the young woman also sinks into gambling hell. The couple then start getting involved in the fearsome world of professional cheaters.