"Masaru and Shinji are two high school juvenile delinquents who spend their time extorting classmates for small change. After Masaru is beaten up by a former victim, the pair go to a local gym to learn how to box. Shinji, however, proves to have much more innate talent than Masaru, who abandons the sport to join the local yakuza gang. After Masaru's departure, Shinji falls in with Hayashi, an older boxer whose influence pulls the youth down. Meanwhile, Masaru's arrogant behavior is getting him into trouble with his gang"--Container.