In a modern Korea with a constitutional monarchy, a Chaebol heiress and a powerless prince enter a contract marriage, discovering love and courage as they confront social barriers and personal scars.

25 years ago, Mi-Hee was an ordinary housewife, married to Chul-Joong with a son. Suddenly, her husband died and her son went missing. This all took place at their house. Mi-Hee was imprisoned for 25 years. She is released from prison and goes back to the home where everything took place.