Connie, a content housewife, lives in suburban New York with her husband Edward and their young son Charlie. During a trip to Manhattan, she encounters a charming French book dealer named Paul. An unexpected spark ignites between them, leading Connie into a whirlwind affair that brings both excitement and guilt. As Connie's secret unfolds, the affair becomes increasingly intoxicating and consuming, threatening to upend her seemingly perfect life.

Edward begins to sense Connie's emotional distance and becomes suspicious of her activities. He hires a private investigator, whose findings bring the affair to light and force Edward to confront his wife's betrayal. The revelations set off a series of events that spiral out of control, testing the limits of love, fidelity, and the consequences of desire. The unfolding drama grips the characters and takes them to unforeseen and irrevocable outcomes, leaving their lives forever altered.