Everyone in Wismar knows and loves the local pirate ship Klabautermann. But now there’s a body floating in the water between the ship and the quay wall. Merle Stegemann, the victim, is a member of the crew of the Klabautermann, which offers creative boat tours for children. This is not exactly where you would expect a crime to take place, but the inspectors find a trail of blood and bundles of money on the ship’s deck. Did someone try to rob Merle?