Jefferson Todd and Louis Castiga, brothers-in-law, come to blows on a Mississippi River steamer when Todd discovers Castiga's presence there with a woman.

A Louisiana con man enters his steamboat into a winner-take-all race with a rival while trying to find a witness to free his nephew, about to be hanged for murder.

After breaking a mirror in his home, superstitious Max tries to avoid situations which could bring bad luck-- but in doing so, causes himself the worst luck imaginable.