Teburoro, a prince from the Caribbean, is "the new kid" at Klößchen and Tim's boarding school. In his honor, a regatta is to take place between the boarding school and the city high school. But shortly before the big competition day, Tim and Willi find their boat completely destroyed! TKKG gets to work - with you ... Together with Tim, Karl, Klößchen and Gaby you search for clues, evidence and question witnesses. Only if you repeatedly slip into the different roles of the detectives and cleverly combine them, you will solve the crime in an exciting finale.