In the near-future where the sport of boxing has gone high-tech, Charlie Kenton, a washed-up fighter loses his chance at a title when 2000-pound, 8- foot-tall steel robots take over the ring. Now nothing but a small-time promoter, Charlie earns just enough money piecing together low-end bots from scrap metal to get from one underground boxing match to the next. When Charlie hits rock bottom, he reluctantly teams up with his estranged son Max to build and train a championship contender. As the stakes in the brutal, no-holds-barred arena are raised, Charlie and Max, against all odds, get one last shot at a comeback.
Rated PG-13 by the Motion Picture Association of America for some violence, intense action, and brief language.