It's the early 1970s in Miami and middleweight contender Boone Connors is learning how the brutality inside the prize ring is overshadowed only by the violence and corruption outside it. Training at a rundown gym in one of the tougher parts of the city, Boone is getting ready for the biggest fight of his career. So is a powerful crooked fight manager named Callahan, who tries to make sure Connors losses the fight after betting big money on the other guy. Through murder, beatings, and threats, Callahan controls the fight game in Miami, and Connors struggles to remain clean despite all the treachery and death around him.