Arthur, Godfather of the Night Owl family, donates a meditation hall for his adopted brother Leo, who suffers from autism and severe asthma. However, school bully Brad seizes the hall, conspires with the dean to crush Leo’s inhaler, and locks him in a storage room. Arthur smashes the glass, breaks Brad’s wrist. Brad’s father Vincent arrives with a gun but recognizes Arthur’s godfather ring, kneels, then attempts a desperate counterattack, only to be subdued by Arthur’s execution squad. Arthur discovers Vincent colludes with the Viper Gang for money laundering, launches a gang war, wipes out the Viper Gang, and purges traitors. Finally, the meditation hall is rebuilt as an armed fortress, Leo finds peace, and Arthur uses absolute violence to protect his only light.
