In Osaka, three troubled youth, Kanako, Atsushi and Kenji, hang out together all the time. Kenji, who lives in an orphanage, is one day sold to a yakuza and their friendship has to come to an end. 25 years later, Kanako has married Atsushi, who is an incompetent yakuza. They have 3 daughters. Kenji, is a competent and unbeatable yakuza. For the first time, Atsushi, who sucks at everything, gets a dangerous mission to kill a thug who has attacked the office of his yakuza group. Kenji, who has advanced to the first lieutenant position, mistakenly kills the dumb-ass son of the head of the Tokyo Yakuza, which triggers a battle between Osaka and Tokyo families. Then, Kenji sees Atsushi for the first time in 25 years.