Der Moorhund

Klaus is twelve years old and spends his holidays with his father, the captain of a border garrison. Together with his friend Fritzchen, Klaus searches the woods for the legendary marsh dog, which is the subject of many strange stories. When they realize that the dog is in fact very tame and friendly, they decide to bring him to the garrison. Suddenly, however, a whistle resounds from somewhere, and the dog runs away. As there is no human being to be seen, the boys are unable to explain the situation. Klaus′ father, however, has an idea what might be behind it. When the soldiers – along with the children, who have secretly followed them – find the dog, they also track down an agent and arrest him.