At just nine years old, Sully is captivated by his father's debut boxing match in Minneapolis, surrounded by the electrifying atmosphere of the arena. As his father, a heavyweight boxer, faces off against the reigning champion, Sully and his adopted brother, Robert, dream of becoming boxers themselves. Fast forward ten years, and the now-teenage Sully, Robert, and their friend Coby navigate the mundane realities of school life, intertwined with their passion for boxing.