Wen Long is an instructor from a family of Lingnan Martial Arts School. Due to his father's paralyzed legs, all the school's matters fall on Wenlong's shoulders. One day, his father solemnly called Wenlong to his side, and in front of Uncle Tang, who had come from Hong Kong, asked Wenlong to leave immediately and go to Hong Kong to look for his mother with Uncle Tang. In the stories that his father often recalled, hadn't mom passed away a long time ago? Under Wenlong's repeated questioning, his father reveals a story buried in the depths of his memory.
Originally, in the early years of his life, his grandfather, with his martial arts skills, traveled to Hong Kong and founded a martial arts school to teach his students, and in 1979, his father and Uncle Tang, who also practiced under his grandfather, became close friends. At this time, my father rescued a singer who was being bullied by British soldiers, and fell in love with this singer named An Wen. When it was time for father and Anwen to get married, grandfather refused to accept a singer into his family. As a result, my father had to live with Anwen in a foster home. Although Anwen gave her grandfather a grandson, he still refused to accept Anwen, who was once a singer. She had no choice but to leave her father, and she never heard from him until he moved back to the mainland.
Now, Uncle Tang has brought back news about his mother from Hong Kong, and she is already suffering from lung cancer, her life is on the line, a step late may leave a lifetime of regret. After a simple packing, Wenlong came to Hong Kong with Uncle Tang. However, it is not easy to find his mom in the sea of people. Luckily, Uncle Tang said he has a compatriot brother, named Wen Hu, is a participant in the Hong Kong World Free Fighting Championships. In order to this only can find mom's clues, Wenlong immediately came to the free wrestling hall. In the wrestling hall, Wen Hu beat his opponent in a grueling match and broke into the championship final.
Winning a match was originally something to be happy about, because the prize money for winning not only solves the expensive treatment cost of his mom, but also the chance to shock the champion is the highest dream of every fighter to realize the value of his life. However, Wenhu never expected that he would be pestered by his agent Scar just after he stepped down from the boxing ring. Scar is a lackey under Master Scarlet. In order to control the fighters, manipulate the winners and losers, and make huge profits, Master Gori, a scum of the boxing world from Southeast Asia, instructed Scar to blackmail Wen Hu.
Manhu's repeated refusals make Master Gori change his mind, and then decide to let Raging Bull and Spotted Leopard fight it out to qualify for the finals. In order to get a preview of Raging Bull's moves, Wen Hu shows up at the arena where Raging Bull and Flower Spotted Leopard face off with his girlfriend Lily. When Berserk Bull uses Scar's tampered boxing gloves to kill Flowery Leopard, Wen Long and Wen Hu, who are unable to stand the sight of him, rush onto the stage at the same time.
Flower leopard was sent to the hospital to implement emergency rescue, along with his brother Wenhu back home, Wenlong finally saw his mother. However, at this time the mother has been spitting blood, unconscious. In the mom Anwen was also sent to the hospital, but the leopard due to failure to rescue and died. The death of Fa Zebra stirs up Wen Long's incomparable anger. After his girlfriend Lily is abducted by Mr. Scarlet, Wen Hu and Wen Long arrive one after another and rescue Lily from Mr. Scarlet. The champion and runner-up are about to start the competition. In order to learn a lesson from the defeat of the leopard, Wenlong sneaks into the lounge and accidentally overhears a conversation about Scar's tampering with the boxing gloves.
The final of the championship match is now in full swing. Master Scarlet is sitting on the stage with a group of his men, and Wenlong has taken over as Wenhu's coach. When the match started, Wen Hu started with defense and then attacked to wear down Berserkers' stamina. After three rounds without taking down Wen Hu, Scar handed over a pair of gloves that had already been prepared. Scar did not know that the pair of gloves that had been tampered with had long been stolen by Wen Long. Without the boxing gloves with the hidden steel balls, the mad bull lost every step of the way, and eventually lost to Wen Hu's men.
Wen Hu's victory failed to save his mom's life. At the moment when Wenlong and Wenhu were celebrating, mom, who could not stand the torture of the disease, pulled out the oxygen tube and ended her life in order to lessen the burden on Wenlong. As mom's body is pushed from the ward to the morgue, father comes to the hospital accompanied by Uncle Tang. Master Scarlet's gang was eliminated by the police. Holding mom's bones, Wenlong and Wenhu pushed their father and set off for home.