The Magnificent 3 (1980)

In Dominica, a Japanese tourist, a Chinese restaurant worker, and an American painter find themselves cellmates after a brawl at a nightclub. While in jail, they are unexpectedly released thanks to a mysterious benefactor – a former Army General. He wants to use their unique fighting abilities against his family member, a powerful mob boss who hires the best fighters worldwide. The unlikely trio must now navigate this dangerous situation and decide if their newfound bond is worth fighting for.