At their 25th high-school anniversary some bourgeois citizens remember their time in school as a happy one. In reality it was quite the contrary. The school was a madhouse in which the teachers, especially Blomme, tormented the students. As a result one of them became a murderer.

Jørgen是一个和蔼勤恳的中年男人，耐心等待着有迹象表明即将到来的晋升。一天，他被上司叫去——他平静的告诉Jørgen那个职位已经完全被取消。受此打击后不久，他代同事掌管的共同彩票赢得了几百万的大奖。于是他做了一个重大决定：他和老婆将对此沉默，自己把钱留下。因为他觉得这是他们应得的，而其它无用之人几乎都不值得拥有。一夜间，Jørgen的人格完全改变，为了保住奖金的秘密，他陷进了一个个最可耻的谎言中，牵引出许多尴尬的境遇。

Egon escapes from the psychiatric ward, where he has been incarcerated since the gang's last coup. Keld and Benny pick him up, and when Egon, as always, is planning the big heist, the Olsen Gang is once again on the move.