Young Xiang Zhen lives an extraordinary life. His younger brother is a boy with super powers and his younger sister is a magical girl. He met Molière, an underage werewolf who claimed to be six hundred and seventy-two and a half years old, and formed a "mutual-help and friendly relationship" in order to fight against the vampires in the city. Living a happy but dangerous life with the beautiful werewolf boy day after day. Happy! ?