The story of Little Peter and his sister Anneli, who help a May beetle named Mr. Zoomzeman (German: Herr Summsemann) to retrieve his missing sixth leg from the Moon. After a fantastic and dangerous overnight adventure they recover the leg and are returned to their beds at home.

An elderly gentleman lies dead in bed. For the employees of the Cologne funeral home, this is nothing unusual. Apparently, Mr. Dressler died of tuberculosis. But then bloodstains are found on the headrest, and one of the undertakers discovers a bullet. So it was no ordinary death after all!