6 Bullets (2012) on Netflix

Plot summary

Samson Gaul is a veteran mercenary who retired from combat after his actions led to the deaths of helpless victims. He is known for finding missing children, and now a desperate father comes to him. Andrew Fayden is a mixed martial artist whose daughter has been kidnapped in a foreign city. He knows how to fight, but he is unprepared to make his way through the corrupt streets where she was taken, and he cannot do it alone. Gaul takes up the search for her, and the two men set out together against a network of criminals that preys on the innocent.