Siblings Vanya and Sonia have spent their adult years trapped in mundane lives at their family’s cottage, caring for their ailing parents. Meanwhile their self-involved sister Masha, a glamorous movie star, has traveled the world in decadent style. After their soothsayer/cleaning woman Cassandra warns Vanya and Sonia of impending doom, Masha arrives unannounced, accompanied by her hunky young lover Spike. When Masha reveals plans that will upend the family, long-repressed resentments bubble over in a weekend full of wild costume parties, voodoo dolls and surprise romance.