"Échangistes" is a French film that tells the story of a couple who decides to explore the world of swinging. Julie and Alex are a married couple who are feeling bored with their relationship and decide to spice things up by attending a swingers party. As they navigate this new world, they are confronted with their own insecurities and desires. The film explores themes of love, trust, and the complexities of human relationships. Will Julie and Alex's marriage survive this new adventure, or will it lead to their downfall?