Lin McAdam rides into Dodge City, on the trail of Dutch Henry Brown, the man who killed his father. The town is abuzz due to a shooting contest in which the grand prize is a rare "One of One Thousand" edition of the Winchester 1873 Model rifle. Wyatt Earp officiates at the contest, in which McAdam wins the coveted firearm. Brown and his cronies blindside McAdam and steal the gun. With McAdam and his friend High-Spade Frankie Wilson in pursuit, the gun proceeds to change hands several times, ending up with an Indian trader, an Indian warrior, and a low-life named Waco Johnnie Dean. Along the way McAdam befriends Lola Manners, a saloon girl from Dodge City, and yet McAdam never loses sight of his quest for revenge.