The Former Yakuza gang member Kazuma (Iko Uwais) has just finished serving a long prison stretch and is getting re-acquainted with the outside world in Tokyo's Kabukicho district. He meets Haruka (Summer Fontana), a young girl searching for her mother, who was Kazuma's childhood sweetheart. Their quest is complicated by a Yakuza henchman named Goro Majima (Ricky Davao) who is on their trail, and culminates in a battle against a friend from Kazuma's past who has become a ruthless enemy of Japan.