After this high-profile couple, Grace (Julianne Moore) and her husband Joey (Charles Melton), who is 23 years younger than her, became famous in a gossip-filled tabloid, their romance has been a national sensation for 20 years. Now, they are preparing to send their twin children to college. At the same time, Hollywood actress Elizabeth (Natalie Portman) is preparing for a film about Grace and Joey's love story. In order to better understand her role, she decides to live in Grace and Joey's home for a while. Joey never really faced the past of his youth, and now that he is over 30 and has become an empty nester, he begins to face the reality of life. As Elizabeth and Grace examine each other, the similarities and differences between the two women gradually emerge. The pressure of the outside world also gradually causes cracks in the dynamic relationship of this family, leading to a series of conflicts and challenges.