Zhang Zhen was imprisoned for impulsively hurting someone during a competition. After his release, he decided to turn over a new leaf, run a business with his girlfriend, and quit boxing. Wang Xuewen, the elder brother of Wang Xuewu whom Zhang Zhen had injured, learned of Zhang Zhen's release and decided to avenge his brother. He repeatedly provoked Zhang Zhen, who endured it again and again, hoping for a peaceful life. However, when his girlfriend was kidnapped by Wang Xuewen, Zhang Zhen finally snapped and fought back.