The force attacking is a fickle demon with a dual nature, while the stalwart being is an honest and inexperienced angel named Nuoqiu. Surprisingly, Nuoqiu accepts the challenging role of a demon detective to fulfill his ambitions. Despite the rarity of any bond between angels and demons, Nuoqiu doubts his investigation when his target recognizes him. While spending time with the demon, Nuoqiu feels a reborn interest and contemplates, "Is this suggesting that I am developing an affection for him?"
