Honest Jack and The Harlot, a train robbing duo in the Equestrian wild west have rode through the dessert unchallenged for weeks now. That however will soon change as famed bounty hunter Doctor Twilight Sparkle is hired to stop them. Armed with her wits, a green haired assistant named spike, and a rifle capable of knocking off parts of mountains, the good doctor sets off for Sunprance to track the outlaws down. Though they aren't going to go down without a fight, and may prove more deadly than originally anticipated.