Plot[ edit ] In San Jose, California , David Kim is shown looking through photographs and videos of his daughter Margot and his wife Pamela at various times in Margot's childhood as a happy, close family. Pamela is diagnosed with lymphoma , and dies right before Margot enters high school. One night, Margot goes to a friend's house for a study group. While David sleeps, Margot attempts to call him three times. The next morning, David is unable to find Margot but assumes she has risen early to go to school.