The story is simple: a rich girl, Dorian, in a posh boarding school gets a trip to Venice as a present for finishing school. But she would rather spend the time in bed with the biology teacher (he is played by an actor who used to be very good-looking about twenty to thirty years ago but is not convincing as a schoolgirl seducer anymore) . So she makes her classmate Anna, who is the younger sister of one of the teachers, go to Venice in her car. Shortly after leaving school, Anna is kidnapped by two thugs who are convinced they have Dorian and call the head-mistress of the boarding school to ask for 2 million dollars in exchange for her life. Laura, Anna's teacher-sister, very soon has the suspicion that Anna was kidnapped.
When Dorian's father arrives, he has his security man, Burns (Juergen) in tow, to hunt for the kidnappers. The police are not informed. After initial squabbling, Laura and Burns join forces in search for the kidnappers. Anna, who is very good in school and a hobby-astronomist, manages to calculate her exact position and sends an SMS to her sister. The attempt to free her goes wrong but now Burns and Laura know that the kidnapped girl is not Dorian. After some soul-searching, Burns doesn't tell though, in order not to endanger Anna, as Dorian's father would never pay up for her.
Meanwhile it turns out that the biology teacher has planned the kidnapping for the money but, of course, not the mixup that has happened. Anna is freed but Burns doesn't know, so he hands over the money as planned. The one surviving kidnapper manages though to blow himself and the money up, after he has shot Juergen.
Luckily Juergen is hardly damaged and it all ends well: he and Laura meet again in Venice and we leave them having coffee on St. Marco's square.