Directed by Choi Jong Tae, the film revolves around Chang Ka Pil (played by Lee Moon Sik) in his 40s, who leads an ordinary life with his adorable wife and their 17-year-old daughter. He faces a crisis when his daughter is sexually assaulted by a high school boxing star from a rich, well-connected family and he finds no help from the school or police authorities. To prove that he is not a coward and will do anything for his family, he decides to take revenge and physically beat up his daughter's tormentor. For the seemingly impossible task, he asks Go Seung Suk (by Lee Jun Ki), a rebellious high school student with talent for fighting, to train him.