The young headmaster of a boy's boarding school has decided that due to the virility of his young charges, they are a sort of national treasure. He believes that his school should become co-educational as soon as possible. In order to raise funds for the changeover, the boys stay behind during their summer vacation and temporarily convert the school into a love hotel.

Thomas, a naive young dental student, faces a rather difficult challenge. His millionaire aunt, a bit of a sex nut, will give both him and his dental school millions if he can prove that he is sexually able and skillful. His schoolmates hear rumors of this trial, but understand the challenge to be for him to keep his celibacy.

"Why Do They Do It ?" preached that it was decent to be a sexual creature. A panel discussion in the Student Association as a kind of frame, you watch various so-called live shows and you met actors like Effie Schou, Søren Strømberg, Dale Robinson and Keld Rex Holm. A lot of attention was given to Bodil Joensen, a very pet-friendly young lady, who would like to enjoy a bull named Sofus.