The "Haus Lüdecke" has a long history and is known beyond the borders of Münster. A body is found in the moat of the old moated castle - in knight armor. The dead person is the newly crowned lord of the castle Manfred Radtke. Was it an accident or is there more to it - as Inspector Thiel suspects? Only a few months ago, the former fair king Radtke bought the venerable castle and wanted to organize medieval games here with his family in the future. Central theme: the bloodthirsty story of the Anabaptists in Münster. Boerne is appalled by this; You don't joke with Münster's blackest chapter. But the preparations are already under way. Does the whole project have to be called off in view of the dead man?