When the old miller dies, he leaves the mill to the eldest son, the donkey to the second eldest and a tomcat to the youngest. The tomcat wants to repay his master's friendship and help him. He has his boots made, gains access to the royal castle and catches the partridges the king wants. He impersonates the miller's boy Hans as "Count of the Mill", tricks him into wearing elegant clothes and brings him together with the king and the princess. He succeeds in overcoming the evil sorcerer and winning a magnificent castle for Hans. Hans finally becomes king and his cat first minister.

The Paris-Munich overnight express becomes the scene of an unusual crime. Private detective Frank Winter is assigned a "case" of unknown proportions! He has 20 minutes to reach the train in Strasbourg as ordered and make contact with a stranger in the S 98 sleeping car. The task is to protect the French scientist Prof. Charles Leduc, an expert in the field of cybernetics...