Qi Feng (Huang Xiaoming) runs a small courier company and barely makes ends meet with his single mother (Gu Jiyun). One day, his ex-girlfriend Laura (Deng Zhaoxin) calls to meet him. She wants to use Qi Feng as a shield to get rid of the pursuit of the rich young man Zheng Fuqiang (Wu Jialong). Zheng is not only handsome, but also an Olympic athlete in Hong Kong. There are many beautiful women who are hard to please him, but he just falls in love with Laura. Qi Feng, who can't forget his old love, can't stand Zheng's arrogant and domineering attitude, so he decides to stand up for his old lover. Unexpectedly, he is beaten by Zheng Fuqiang, who was once a karate champion. He uses his father's power and influence to quickly shut down Qi Feng's courier company. He makes a cruel statement that if Qi Feng can beat him, Laura and the company will be returned to him. Luo Ba (played by Hong Tianming) is Qi Feng's good friend. He uses provocation to encourage the defeated Qi Feng. Qi Feng then thinks of his father Qi Long (played by Sammo Hung), who has been separated from his mother for a long time. He is a famous martial artist. It can be said that brothers fight tigers together, and fathers and sons fight together in battle...