4Sofia is a quiet, shy young woman who's never been away from home for long. When she moves to Turin for school, it's her first time away from her family and her boyfriend Luca. But her new roommate, Veronica, leads a life very different from hers: she prefers evenings in the company of beautiful boys! Meanwhile, Luca dreads the influence of Veronica and her entourage on Sofia, and especially the presence of the enigmatic Lorenzo, who seems to be a little too interested in his girlfriend...