30-year-old virgin Mihye is burning with desire, but the only company she has on her 30th birthday is wine, cake and a life-size pillow of her favorite idol singer. Well, a girl's gotta drink and dream big. She blows out the candles with just one wish for next year… to finally pop that cherry. When she opens her eyes, behold, a beautiful piece has materialized out of nowhere. And he has an irresistible offer for her: become a witch and take him to her familiar. One thing is certain... This witch will walk more than brooms.