A sinister town boss called Pat Barnes has exploited almost everyone in the town. If they don't succumb to his demands they normally end up dead. Barnes is finally brought down by Shanghai Joe and a smooth-talking snake-oil salesman.

When Shanghai Joe, a skilled martial artist, arrives in the Wild West, he finds himself caught in the middle of a battle between a powerful rancher and a gang of outlaws. With his deadly fighting skills, Shanghai Joe fights to protect the innocent and seek justice.