Taekwondo champion Kim sacrifices his fighting dreams to focus on raising his young daughter, Sa Rang. When a ruthless gambling overlord abducts her, Kim finds himself forced back into the ring. To secure Sa Rang's release, he must participate in a fixed boxing match, risking everything in a battle against corrupt forces. As he navigates this perilous situation, Kim grapples with the urgency of fatherhood and the sacrifices needed to protect his beloved daughter.