Countess Yumemi has a gift for magic, and together with her childhood friend Fred, she aims to become the first woman to join the Order of Knights through a friendly competition. However, just before she is about to achieve her dream, she is ordered into an unwanted marriage by the king, who has taken notice of her high magical power. As a noblewoman, the king's orders are absolute, and she is determined not to cause any trouble for her family, so she arrives shortly after the wedding. Her husband, who had a talent for witchcraft, neglected Yumemi, violently attacked her and sealed her will and magic power with a cursed ring. Stripped her of magical powers and feelings. Yumemi was used as an outcast and treated like trash in her marriage, until one day she was pushed down the stairs and was left on the brink of life and death. When Yumemi manages to wake up, she no longer remembers her marriage, but has escaped the curse ring's power...? From her diary, Yumemi learns that she was once treated harshly as an incompetent wife who couldn't even use magic. Unaware that she has regained her magic power and will, she begins to fight back against her husband, who treats her as ‘incompetent’, and the servants who mistreated her, with tricks of her own!