Chocolat and Vanilla are two young witches living in the magical world. They are best friends, but also rival candidates to be the next queen of the magical world. They come to the human world to gather the most “hearts,” crystalized feelings that boys feel for them, to pass the trial to become queen. When they reach the human world, Chocolat, who was more popular than Vanilla in the underworld, not only falls to second place, but falls in love at first sight with the mysterious and aloof boy, Pierre. If her precious witch’s heart is stolen, it means death. Can Chocolat protect it? Who will find glory in this trial to become queen of the underworld?