Riley, living with PTSD, navigates the loss of her grandfather while her older sister, Shae, imagines a new life for herself outside of her marriage. Their grandfather’s will reveals a surprise: a huge sum of money that could change their lives. Shae is desperate for the money, but Riley has serious reservations — all of which can be explained by a mysterious envelope that Riley urges Shae to open. But Shae is reluctant to be pulled into another of Riley’s “dramatic stunts.” As they clear out their childhood home, the sisters come to terms with their fractured relationship and try to see a new way forward together.