Cowboy Ross McEwen arrives in town and asks the banker for a loan of $2000. When the banker asks about securing such a large loan, McEwen shows him his six-gun collateral. The banker hands over the money in exchange for an IOU, signed "Jefferson Davis". McEwen rides out of town and catches a train, but not before being bitten by a rattler. On the train, a nurse, Miss Hollister, tends to his wound. A posse searches the train, but McEwen manages to escape notice. However a mysterious Mexican has taken note of the cowboy, and that loudmouthed brat is still nosing around. Who will be the first to claim the reward for the robber's capture? Written by David Steele