In an elegant house in New York, two couples of parents gather to discuss a conflict between their children: a minor altercation in the park that left one of the kids with a broken tooth. The initial intention is to maintain a civilized dialogue and resolve the problem maturely. However, as the conversation progresses, tensions begin to bubble up, revealing not only the opposing personalities of each couple but also the flaws and resentments they harbor.
Nancy and Alan, an upper-class couple, attempt to keep their composure, but the differences in their approaches and their own emotional lives become the center of the conflict. On the other hand, Penelope and Michael, who are less refined and somewhat more straightforward, start to challenge the pretensions of the first couple, causing the masks of cordiality to slip away. What begins as a civil meeting soon transforms into total chaos, filled with accusations, old grudges, and outbursts of laughter and rage.
Between one glass of wine and another, the four are pushed to confront not only the upbringing of their children but also themselves and their own notions of morality. In a power play where the rules constantly change, old wounds are opened, and the dialogue turns into a cruel battle for ego that will leave everyone wondering what it truly means to be a good parent.