Shuji is a good-looking lad, one of the up-and-coming assassins for the Daito mob of the yakuza, Japan's answer to the mafia. Despite his pretense of toughness, he frequently has overwhelming longings to return to his childhood and the innocent games he played then with his best friend's younger sister. When he is sent to assassinate the members of a rival gang, childhood memories lead him to permit one of the men to live. Rather than being grateful, the survivor of the killings plots his revenge despite the fact that the two gangs are now merging into one operation. Meanwhile, Shuji has run across his childhood sweetheart.