At 50, cattle driver Sam Sawyer thinks he can finally dust off and retire, maybe open an eating house. But after a pack of Apache ambushes him and leaves him to die in Gila River country, he barely makes it to a remote ranch. The owner, Hanna Stewart, has worked the desert spread with her young daughter ever since her husband went for a ride and never returned. For years she's been victimized by the corrupt sheriff of Lost Mine, Vic Moseley. Turns out Moseley's evil intentions don't stop with Hannah Stewart. And things are fixing to get downright bloody. After a lifetime in the saddle, Sam's about to ride not only the hardest trail of his life - but possibly the last....