The movie revolves around the story of Claire (Katie Holmes), a mother of two who is struggling to cope with her husband's (Jason Momoa) infidelity and her own mental health issues. Her life takes a dramatic turn when she meets her new neighbor, Ruth (Andie MacDowell), a mysterious and troubled woman who has a dark past. As Claire becomes more entangled in Ruth's life, she begins to uncover the traumatic events that have shaped Ruth's personality.