Baekhyun enters the school as a new student and was labeled as mysterious and creepy by the students because of the aura that surrounds him. They don’t know, though, that he is the devil’s heir and he was sent here to Earth to find his muse and bring her with him to hell. With his guardians entering the school as new students, too, the school will surely be filled with mysterious presence that disguise themselves as handsome, young boys.