There are many stories and legends about the reign of Elector Johann Wilhelm or Jan Wellem for short. The elector is still enthroned on horseback in front of Düsseldorf City Hall. But apparently, he had a great secret, and it is your job to find out what that is? A long-retired museum employee had seemingly discovered the secret. But now he has died at the age of 81 and has apparently taken the secret with him to the grave. Or not? While dissolving the apartment, his children found a few things that could possibly give clues to the secret. Or is it just worthless junk from a weird, somewhat lonely old man? Find out and follow the indications through the Carlstadt and old town of Düsseldorf. Be accompanied by one of the children of the retired museum employee (live actor). He or She can certainly give you hints if you don't know what to do next.