Cash holliday and marshall earp are the illegitimate sons of the most notorious gunslingers in the west. Despite a lingering bad economy in 1896, the two operate a flourishing detective Agency, Largely Thanks to selectiv...Cash holliday and marshall earp are the illegitimate sons of the most notorious gunslingers in the west. Despite a lingering bad economy in 1896, the two operate a flourishing detective Agency, Largely Thanks to selective partnerships. When sheriff kristof varga hands marshall a bounty for the infamous cactus kid, they realize their business could change overnight.