She's Maggie, million dollar baby—Maggie.
She comes from an unhappy family, her father, who has warmed her since childhood, is dead, her mother is a low-income person, her sister is pregnant before marriage, a single mother with a doll, and his brother, a yellow-haired boy who is not familiar with the world. She is thirty-one years old this year. But she also worked in a restaurant, and with her frugal money, she paid six months of tuition before she was able to get into a boxing stadium. The boxing gym was run by Coach Deng, who dedicated his life's work to boxing.

Before he met Maggie, his gold medal boxer Willie, because of Coach Deng's retreat-like tactics, gave up continuing to be under Coach Deng's banner, but instead switched to another manager, and in the first game after casting another manager, Willie won the championship. Coach Deng just felt that Willie was not ready to become a champion, but he was wrong about that. Coach Deng also has a friend, a best friend, and he's a guy who has played 110 games. Although he is now in charge of some of the chores in the stadium, he has a love of boxing in his heart.
When Maggie first came to the venue, she was never accepted by Coach Deng because he adhered to the principle that he did not teach women. The change was that on Maggie's thirty-first birthday, Coach Deng felt strength from Maggie. He felt that there was a power in this woman, because Maggie said that boxing was the only thing she liked, although she was thirty-one years old, although she did not have an innate advantage, but she just liked, she could practice boxing day and night, she could save money for boxing, at this point, Coach Deng began to teach Maggie boxing.
Maggie's hard work has made the training bear fruit, but when the results appear, Coach Deng still failed to convince herself to let her play the game. Instead, he handed her over to another agent and asked him to take Maggie to the game. This manager is a manager who only cares about his own interests and does not care about the players. He took Maggie to the game, did not teach Maggie any skills, just simply took her to the game, in his opinion whether he lost or won, it was just a game for him. Coach Deng was not at ease and also went to the game. After seeing Maggie's defeat, he felt unbearable to go forward to point out, and when the referee asked him if he was Maggie's manager, he seemed to have made up his mind to answer yes, and he became Maggie's manager from then on.
Since this competition, Maggie has trained harder, Coach Deng has constantly taken him to more competitions, and Maggie has played well and cut all the way. When the players of her same weight were not his opponents, Coach Deng decided to give her another level, to a higher weight. And in the higherweights, this battle, although Maggie played a little hard, but she persevered, she won. All kinds of excellent performances have made many games throw olive branches to Coach Deng, who considered Maggie's current situation and did not agree to these competitions, but after Maggie trained more professionally and more capable, he decided to participate in these competitions.
Maggie has accumulated a lot of money in these competitions, and Maggie has always wanted to improve her mother's and sister's life, and she bought her a house. When she returned to her hometown to take her mother and sister to see, she thought that her mother and sister would be very happy, but they were just worried about their minimum guarantee and welfare benefits, and even spoke ill of Maggie, saying why didn't Maggie give them cash directly? Maggie was disheartened, angry and aggrieved, she really had no way to communicate with them, just left a sentence, the house should be replaced with cash, just replace it. On the way back, Maggie saw a little girl and a dog in the car, looked at each other and smiled, and suddenly relieved, she felt that if she could have a dog, she would be very happy.
On her return, Maggie had her most important stop, a battle that changed her destiny.
Maggie confronted the prostitute boxer, the boxer was good at making a sinister move, Maggie was not accustomed to her tricks, after losing, discussed the experience with Coach Deng, under the guidance of Coach Deng, Maggie won, but the prostitute boxer was angry but when Maggie turned around, she sneaked up on Maggie, at this time Maggie was just hit in the head, the head smashed into the boxer's rest stool, just hit the spine, Qi lost her life, lost her game, lost her love. Because the result of the hospital examination was that Maggie was paralyzed from below the spine. Maggie would never be able to stand again for the rest of her life, and what a blow to a boxer, and to a budding boxer. Professor Deng said that he had killed Maggie. Dai Manqi but Maggie didn't blame him at all.
Maggie just wondered if her family could come and see him? When her family came to Maggie's city, they traveled for five days before visiting her in the hospital, with a strong purpose, to move the house to her mother's name. Can you imagine? A young girl paralyzed in bed, unable to move her hands and feet, only her mouth could move, and her mother shoved a pen into her mouth and wanted him to sign it. The purpose of the signature was to obtain her property. Coach Deng wants to do something, but is stopped by Maggie, who has to solve it herself. This desperate mother-daughter relationship.
It was also ridiculous to say that she felt that her biological mother, sister and brother, and not even an unrelated Coach Deng had come well to her. In addition to guilt, Coach Deng read to Maggie at her bedside day and night, caring for her body, and scrubbing her. He wanted to keep the young girl, but he knew he couldn't keep it. After Maggie came up with the idea that she wanted to euthanize. He was very entangled and remorseful, and he wanted to keep the young girl, but, for the young girl, it was a torture. So, in the end, he chose respect. Euthanize the girl.
The film ends with endless sadness.