Marta, a young woman living in Mantua, is feeling neglected in her marriage to Dario, a successful publishing executive who is more interested in his work than in her. One day, Marta meets Leon, a charming and free-spirited Frenchman, at an art exhibition. Attracted to his carefree attitude and artistic lifestyle, Marta finds herself drawn into a passionate and adventurous affair with Leon. Through their clandestine rendezvous, she begins to explore her own desires and sexuality, experiencing a liberation she has long yearned for in her stifling and routine-filled marriage.

As Marta becomes increasingly entangled in her affair with Leon, her behavior starts to change, igniting suspicions in Dario. She is torn between the excitement of her newfound passion and the stability of her life with Dario, forcing her to confront the true nature of her feelings and the potential consequences of her actions. Unbeknownst to both men, Marta must make difficult choices that will ultimately shape her future and impact the course of her relationships.