One day Giulio, a young, highly successful real-estate agent, runs into Ilaria, the sister of a former classmate. She is apartment hunting with a much older man: the two are about to marry. Giulio is thunderstruck by Ilaria’s beauty, and thinks that her upcoming marriage is totally wrong. Back at the office, he receives an e-mail from Ilaria, asking him over to her place. Convinced that she has taken an interest in him, Giulio rushes to the encounter, and passion does break out between the two of them. But Giulio is disoriented by the messy love interests he suddenly discovers all around him: his father has a young Russian mistress, and his mother has a crush on one of her pupils. Not even the fact that Ilaria is madly in love with him, and willing to give up the security offered by marriage, can calm Giulio down.