De esposo fracasado a rey del ring

Heavyweight champion Sean dies under a falling rig, waking up in 1985 inside the 300-pound body of Jimmy, a deadbeat who wastes his wife's money and owes thug Sal fifty grand. Sarah, the mob heiress who left her family for him, still stands by him. Sean uses his boxing genius to slim down and fight to the top — winning back his wife, crushing Sal.