In contemporary Los Angeles, two millennials navigating a social media–driven hookup culture begin a relationship that pushes both emotional and physical boundaries.

Seven-year-old Rio visits her grandparents in Japan for the first time. She observes the beauty and unfamiliarity of the household, sensing a distance between her American family and the Japanese relatives. When her mother, Seiko, reveals an open secret during tea, the children are excused from the room and something happens behind closed doors.