Antoine and Christine, a young married couple, live a carefree life, balancing their passions for art and music. Antoine works as a florist, while Christine is a violinist and teacher. They have a loving relationship with their quirky neighbors and enjoy a bohemian lifestyle. However, their harmony is disrupted when Christine becomes pregnant and Antoine seeks a more stable job to provide for their future. He finds a new position at an American hydraulics company, where he meets and begins an affair with Kyoko, the daughter of a Japanese client. As Antoine's feelings for Kyoko deepen, he must confront the consequences of his actions on his relationship with Christine.