John Jones has never courted trouble. But his partner Rourke seems to draw it in spades - like when he agrees to escort a group of tenderfoots to a remote hacienda in the Sierra Negra. First they have to get an ornery old invalid, his beautiful daughter, her dandied-up fiance and the rest of their entourage over some of the roughest terrain in the country. Every day, they risk their hides to protect their party against the vicious bandits who roam the area. But as they journey on and the murder attempts continue, it appears the most dangerous enemy might just prove to be one of their own.