The story follows Sam (Keir Gilchrist), an 18-year-old on the autistic spectrum on his search for love and independence. His funny yet painful journey of self-discovery upends his entire family, forcing them to grapple with change in their own lives as they struggle with the central theme: What does it really mean to be normal? Leigh stars as his mother, Elsa, who is on her own journey of self discovery, and Rapaport plays his father, Doug. Brigette Lundy-Paine (Margot Vs Lily, The Glass Castle) will play Sam's sister Casey and Amy Okuda (How to Get Away with Murder) portrays his therapist Julia.