An eccentric teacher decides to teach his students, in their final year of high school, everything he knows about sex. However, he is surprised to discover that his students have had more extensive and unusual experiences than he has. So he asks them to tell him their stories, and the lesson turns into an unlikely comedy...

Natasha, daughter of shipowner Dimitrios, receives threatening phone calls. Her father decides to hire a bodyguard (Pavlos Evangelopoulos) to watch over her, on the condition that his daughter not find out, because he does not agree with the idea of a bodyguard. So, "by chance," the kids meet, hang out, and, inevitably, fall in love. But the guy threatening her has other plans...