Maria, a duke's daughter who her family coldly oppressed because of her strong magical powers, believed that she would find happiness with her kind fiance. However, when she witnessed her fiance cheating on her, her magical powers went out of control, and she was executed for attempting to assassinate the royal family. Maria's soul, broken by the betrayal and repeated torture, is reborn as Mariabelle, a member of the royal family of a neighboring country, by a little fairy. "May you find happiness in your next life." Mariabelle grows up surrounded by the love of the fairy and her family. Mariabelle was satisfied with her happy and peaceful days, but one day, the fairy disappears. It is said that this is related to Mariabelle's past life. There was a reason why the little fairy chose Maria's soul, which was hurt by betrayal, and reborn her as a member of the royal family of a neighboring country...