No man knew how to survive the dangers of the West like the legendary frontiersman Kit Carson. But even Kit was in for the ride of his life when he found himself trapped on a flimsy raft hurling down the roaring Green River—straight into a mysterious canyon surrounded by impossibly high sheer rock walls. Kit's first worry was trying to find a way out...until he came face-to-face with a primitive tribe of Indians hidden in the canyon, preparing to fight a bloodthirsty enemy tribe in a battle for their lives—a battle Kit would have to take sides in, whether he liked it or not.