Mortal Contact (1995)

Michael Reeves s a martial arts instructor. Michael meets Marina who brings her young son, Christopher to his school. Michael develops a relationship with Marina. Marina's ex husband, Jimmy owes money to a crime syndicate, Christopher is kidnapped. Michael brings Jimmy to the gangsters insisting they free Christopher but defeats one of their best fighters in self-defence. Michael is offered to fight in an underground tournament to free Christopher. Michael agrees.