Jeff Clayton, who has already won $5,000 at poker when the game’s big loser returns, asking for one last hand. This time, the stranger will wager his portion of a ranch. He loses, tries to gun down Clayton in despair, and loses again, winding up dead on the floor of the saloon.

The town of San Felipe is plagued by robberies. Two Federal Agents are sent to investigate the major suspect, a local landowner. One agent works on his ranch, the other becomes his daughter's fiance.

A man has had a werewolf curse cast upon him. If he doesn't get rid of it, he turns into a killer werewolf when the moon is full.