Cowboy Sunset Carson teams up with Frog Millhouse on a routine supply trip to Placer City. Before long, the duo find themselves ambushed by a team of dastardly highwaymen embroiled in an extortion ring. Sunset and Frog must then go undercover to set things right for a mining town under siege. Galloping hooves, spittin' six shooters, and all manner of disreputable behavior ensue.