Edith, after losing her parents in a tragic accident, was taken in by her father's family, the Oakridge Earl's household, where she was treated coldly by her step-parents and step-sister, Daria. One day, a marriage proposal comes to the Oakridge family from Lionel, the eldest son of the Granville Marquis, whose family is heavily in debt. The proposal has a hidden reason; during the meeting, Daria is shocked by Lionel's sickly appearance and pleads with her parents to let Edith take her place in the engagement. Lionel, who has been told by doctors that he has only a year to live, asks Edith to bear with him for a year, considering it a one-year engagement contract. Despite this, Edith begins to support Lionel devotedly. In a world where magic has almost disappeared, Edith possesses a special ability inherited from her parents. As Edith supports Lionel, he begins to show miraculous recovery, gradually regaining his former beauty. He soon falls deeply in love with Edith. This is a heartwarming love story with a happy ending.