State Ranger Lucky Saunders (Russell Hayden) meets Steve Kirby (Tristram Coffin), a newcomer running for sheriff, at a birthday party for Gayle Foster (Alma Carroll). Lucky immediately distrusts Kirby, but everybody puts it down as jealousy and they accept Kirby. Latter, two rustlers seize Doc'Cannonball' Jones, the town animal doctor, and take him to a shack where they force him to treat a wounded outlaw. While there, Cannonball sees an envelope addressed to Kirby. He tells Lucky and they follow the rustlers when Cannonball spots them in town, but ride into a trap and Lucky loses his horse. The cattle belonging to Dan Foster (Joel Friedkin), Gayle's father, are stampeded the following night and Dan is killed. Lucky's horse is planted on the scene and he is thrown in jail. But the town sheriff (Hal Price) gives him one hour to prove his innocence.