Adult siblings Baxter (Jason Bateman) and Annie (Nicole Kidman), scarred from an unconventional upbringing, return to their family home after an unlikely accident. When their parents (Christopher Walken and Maryann Plunkett) - performance artists famous for elaborate public hoaxes - suddenly go missing under troubling circumstances, Baxter and Annie investigate. Unsure whether it's foul play or just another elaborate ruse, nothing can prepare them for what they discover.