His Secret Life is an erotic portrayal of what happens when a husbands death brings decades-old secrets out of the closet. When Antonia (Margherita Buy) finds out that a tragic accident has taken her husband Massimo's (Andrea Renzi) life, she can barely tolerate the pain of losing her partner of almost a decade. They were happily married, and Antonia had no reason to believe Massimo had a second life. He never let on that a betrayal lurked in their midst. Antonia soon discovers clues that suggest Massimo wasn't as straight-shooting as she always thought he was; he had a mistress throughout their marriage. After uncovering more evidence, Antonia discovers that Massimo's mistress wasn't even a woman. In fact, he is a handsome man named Michele (Stefano Accorsi). Shocked and no longer grieving, Antonia submerges herself in her husband's former secret world, meeting friends from his second life and perhaps becoming involved with them herself.