In the chocolate factory, chaos reigns: the chocolate is over-salted and the secret recipe has disappeared. Can TKKG find the culprit? When a glass eye also appears in the chocolate, it becomes clear that the four detectives are dealing with real scoundrels! To make matters worse, Klösschen's mother wants to convince them to eat raw food. So there's plenty for TKKG to do! TKKG consists of Tim, Karl, Klösschen, and Gaby. The four friends bravely solve every case and dive into exciting adventures. Of course, their dog Oskar is not to be missed.