In a small, US costal town with many Spanish speakers, a motorcycle gang arrives on holiday. Also in town to try to reconnect with his pregnant girlfriend, Karen, is businessman Paul Collier. Paul and a leader of the cyclists, J.J., knew each other years before, so when the gang comes upon the couple and, led by the menacing Bunny, beats up Paul and begins a sexual assault of Karen, J.J. tries to intervene: he suggests they hold cycle-riding contests, with the winner claiming Karen (he promises, sotto voce, to set her free if he wins). After the contests commence, Paul crawls away to look for help. He meets with a shrug from a cowardly sheriff's deputy; where can he turn?

Rugged cowgirl, Nell Hagen sets out to retaliate for the hanging of her father Judd, who ruled their valley with an iron fist before the natives revolted. She is accompanied by her brothers, Ritt and Kirby, a hump-backed half-wit, and their sensuous cousin Julie Ann. The family then robs a bank, kills two tellers, enacts their revenge before heading for the border where their own family drama gets really mean and nasty.