Korean childcare worker Boyoung awakens in a mysterious land and a bygone era, trapped in the body of governess Edith Bruissel. Thrust into a world of secrets, magic, and noble intrigue, she is determined to find a mage who can send her home. But her plans are quickly complicated by a secretive duke with a troubled past, a marriage contract, and children who need her more than ever. Can Boyoung find her way back to the world she came from, or is she trapped in Edith’s life for good?