Max Zander, a World Intelligence Police Agency (W.I.P.A.) agent, is transferred to LKA Dusseldorf, Germany, for one year, where he shall investigate the Russian Mafia. When a friend of him is blown up by a bomb, Max first is full of sorrow, but then decides to take revenge for his friend anonymously as the Clown.
The interior shots were taken at what is now the Filmmuseum in Kristianstad. The only Filmmuseum in Sweden at present. The old studio from 1908 with it´s glass celing is still intact (and a well visited part of the museum) making it the oldest studio in Sweden.