Three generations of a large theatrical family come together for one last weekend at their East Hampton family estate. Oona Hart, an electrifying Hollywood movie star, manages to charm her way into this eclectic and extraordinary family full of writers, actors and directors. Her presence further complicates what is already perhaps the world's most dysfunctional family. As the weekend plays out, the family's well-kept cache of secrets is pried open and all the hidden stories begin to reveal themselves.