Rageaholic follows Yakuza-busting police officer Fukama (Kawase), who, after allowing his overly-violent nature to get the better of him, botches an arrest and leaves several bodies in his wake. Disgraced and sent to America for psychotherapy, he returns to Japan years later to discover that the town he once cleaned up is now so clean that it has literally become sanitized – with death as punishment for those who do not conform. And as he realizes how dangerous this ‘sanitation’ truly is, the rage inside him returns with a bloody vengeance.