Daniel Shay comes to Dodge City as a drummer who peddles rat traps as a way of making money. While Daniel continues to look for buyers of his rat traps, he sees a Cheyenne boy stealing a horse. As he looks on memories of a battle at Rock Creek return.

While having dinner with Sarah Morgan Mr. Shay wonders about Jimmy Morgan's father who died in the Rock Creek massacre, Sarah mentions that the cavalry ran him down.