Annie's life with Laurent is a picture of perfect harmony; she is the proud mother of two brilliant and sensitive boys, Maximilien and César, and Poupi, a teenage daughter who willingly supports her in bringing up their newest addition, Milo. Together, they form an ideal family, one that Annie manages with a firm but loving hand. However, on an uneventful weekend morning, the discovery of a forgotten positive pregnancy test lying around in the bathroom sends shockwaves through this idyllic existence, shattering it into a thousand pieces. Whose test is it? As Annie launches into a frenzied investigation to uncover the owner of this object, she finds herself grappling with a myriad of uncertainties. Despite her best efforts to maintain composure and save face, Annie begins to question everything she thought she knew about her family. The revelation forces her to confront the possibility that her carefully constructed world might be more fragile than she ever imagined. This discovery is just the beginning; as Annie delves deeper into the mystery, she will experience a series of revelations that will turn all of her certainties on their heads. Her life, once a neatly stacked deck of cards, is now reshuffled in ways she could never have anticipated. Through this journey, Annie must confront not only the potential secrets within her family but also the complexities and unpredictability of human relationships.