Pursued by police and rival gangs, a motorcycle gang, headed by Waco (Robert Porter) takes refuge in a convent located in a remote region of the Arizona desert. They smuggle heroin in their motorcycles. They capture one policeman (Billy "Green" Bush) who was following them, taunt him and let him go. This treatment inspires a brutal relentlessness on the cop's part, which serves them poorly. When they are forced to leave the convent, they take a novice nun (Elizbeth "Tippy" Walker) with them as a hostage. By the end of the film, she has fallen in love with Waco, and chooses secular life over monastic life. This film features numerous picturesque sequences of desert motorcycle riding.