Minh Long is a retired boxer who has retired at the peak of his career after a string of victories and now leads a happy life with his wife Thủy and their daughter Diệu. However, his arrogance earns the ire of powerful boxing manager Cường. When Diệu is found to have a terminal illness, Minh Long gets back into the ring in order to get the funds needed for her treatment but has to face his stubbornness and Cường, who is stopping him from coming back.