Anna wants to improve her marriage to sculptor Marco but ends up having an affair with her new teacher Antonio as well. While performing a careful balancing act alternating between her two lovers, she becomes pregnant and is, not unsurprisingly, unsure by whom. Therefore she goes to a weekend retreat on her own. Marco and Antonio meet, having both come to the train station to say goodbye to Anna and immediately hit it off. They decide to have a boy's night out on their free weekend.