A baby of a nobleman and a baby of a commoner switched places, all by a fairy prank. Anna, a noble lady, who doesn’t resemble her family at all, was worried because she couldn’t use magic. Until one day, a fairy appears right in front of her… When she was 14, Anna found out the truth and ended up living as a commoner. Naturally, her fiancé, who she has been engaged to since she was a child, is going to leave her.