Angela and Joe are mortified by the racket of their ongoing home renovations, but their upstairs neighbors, Piña and Hawk, couldn't care less about the loud, intimate noises leaking from their own bedroom. This contrast defines the two couples: Angela and Joe's twenty-year relationship has hit a dead end, while Piña and Hawk, together for just a year, are nowhere near their expiration date. Fueled by forced civility and mutual curiosity, the neighbors gather for a dinner party. The moment Piña and Hawk step inside Angela and Joe’s home, the room fills with the tension of a live grenade with its pin pulled.

Taking place almost entirely in a single location with just four characters, director Olivia Wilde breaks apart the film's theatrical structure by turning the house into a fifth character. Packed with half-open doors, blind spots, and walls and windows which cannot hide any private secrets, this house - much like its inhabitants - is ready to yield a few surprises.