Bounty hunters have ambushed mountain man Joe Moss and his wife, Fiona, and aim to take them back to Virginia City to face the gallows. The powerful Peabody family, which owns a mine on the Comstock Lode, blames Fiona for murdering one of the clan. Joe's wife is no murderer, but Moss is no stranger to klling his enemies - and taking their scalps as trophies. And now, as merciless gunmen drag them across a barren desert full of hostile Paiutes, Moss is going to show his captors why he's known as Man Killer ...