The plot revolves around a family of theatre actors, directors, and playwrights spending their last summer together at their matriarch's home in the Hamptons. The summer house, named Proskurov, is being sold as the family can no longer afford to keep it. Proskurov has been the site of an intimate outdoortheatricalperformance for many summers, and the family are preparing the final details of the show when successful Hollywood actress Oona Hart arrives. The film explores the dark underbelly of the family as Oona attempts to attach herself to them and their theatrical endeavors as she seeks to leave Hollywood and embark on a stage career.