Micky Ward is a struggling boxer long overshadowed by his older brother and trainer, Dicky, a local legend battling his own demons. Their explosive relationship threatens to take them both down. However, the bond of blood may be their only chance to redeem their pasts, and, at last, give their hard-luck town what it's been waiting for: pride.

Billy "The Great" Hope, reigning Light Heavyweight Boxing Champion of the World, seemingly has it all: an impressive career, a beautiful and loving wife, an adorable daughter, and a lavish lifestyle. When tragedy strikes and his lifelong manager and friend leaves him behind, Hope hits rock bottom and turns to an unlikely savior at a run-down local gym: Tick Willis, a retired fighter and trainer to the city's toughest amateur boxers.

Charlie Kenton is a washed-up fighter who lost his chance at a title when 2000-pound, 8-foot-tall steel robots took 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 venue to the next. When Charlie hits rock bottom, he reluctantly teams up with his estranged son Max to build and train a championship contender.