A Japanese salaryman finds his body transforming into a weapon through sheer rage after his son is kidnapped by a gang of violent thugs.
Hatsuko, who is poor and has no friends, finds emotional support in Mishima, a boy in her class, who helps her with her study to go to a high school together. However, Hatsuko's brother causes trouble at the factory and gets the sack. Hatsuko gives up her dream of going to high school.
