An aging retired fighter has to get back to the ring in order to save a young student

驻守沙漠军人里昂，惊闻兄长被人陷害烧伤，激愤之余，决定回美见亲兄最后一面。岂料到达后，噩号传来，为暗助兄嫂还清医院欠账，里昂毅然参与连场血腥血雨的地下拳赛，战战惊心。