When Seth receives a mysterious letter inviting him to spend the weekend at a secluded mansion in the country, he soon realizes the people inside the house may know him better than he knows himself.
Ji-yeon and Do-jin are exhausted from years of IVF treatment. They don't remember what life was like before. She continues to experience the pain of separation from a child she has never met. Do-jin is worried about her health and wants her to quit, but she can't. "Why can't I be a mother?" She won't give up.