Two middle-aged couples travel to a secluded country house outside Buenos Aires to visit their friend, the artist Daniel (Gonzalo Velasco). Over lunch, Daniel sparks an intense debate about monogamy, marital dissatisfaction, and open relationships. The tension reaches a boiling point when a younger, provocative couple—Alexandra (Stephanie Troiano) and Jacobo (Ull Galindez)—arrive late and propose that the group abandon their traditional marital boundaries for a group sexual encounter.