Mad Foxes

Hal, driving a fancy Stingray, and his girlfriend were mistreated by a band of bikers. Hal hires a friend who runs a kickboxing school. The kickboxers show up at a bikers ceremony, beat them and castrate their leader. The bikers show up at Hal's parents' estate, kill the family and servants. Hal, armed with guns and grenades, finishes off the bikers. But the castrated leader has survived.....