Do you speak tourist? From the adventurous life of a tour guide. Tilman is young and needs money. Without much thought, he takes a job as a city guide - known as "city image explainer" in Berlin - on a sightseeing boat. He struggles with Bavarians who don't speak German, braves storms and hail, and deals with irate seniors, transforming bored Franconian students into a passionate crowd of enthusiastic Berlin fans. Soon, nothing can throw him off balance, and he even finds answers to the most important questions of every Berlin tourist: If you couldn't go over the wall, why didn't people go around it? Was Berlin really the capital of Russia? And when was Horst Tappert actually president?.