Join the thrilling adventure of Felix Spürnase, a new detective in town! On a dreary, rainy day, Felix is eagerly waiting for a new case when he learns about a burglary at Mr. Zeigerlein's watch shop, where two watches have mysteriously vanished. As Felix and his crime-fighting friend, Mr. Häberlein, embark on a quest for clues, another break-in occurs at Baker Mehlig's shop, sending the town into a frenzy. Even Police Officer Willi Wichtig is stumped! Follow Felix as he bravely ventures into the sewer system after a lead, only to find himself trapped by the criminal. Just when it seems hope is lost, an unexpected visitor at the costume shop may hold the key to solving the case. Will Felix escape his predicament and catch the thief? Come and find out!