Pulled into the Mexican Revolution by his own greed, Texas gunrunner and pilot Lee Arnold joins bandit-turned-patriot Pancho Villa and his band of dedicated men in a march across Mexico battling the Colorados and stealing women's hearts as they go. But each has a nemesis among his friends: Arnold is tormented by Fierro, Villa's right-hand-man; and Villa must face possible betrayal by his own president's naiveté.