Dreamy Cleo feels a very special connection to her hometown of Berlin. Her greatest wish is to turn back time - with the help of a magic clock that was captured by the legendary Sass brothers and has since been lost. The young woman hopes to use it to prevent the early death of her parents. One day she meets the adventurer Paul, who lives on a houseboat and has bought a treasure map at an auction. Together they embark on an exciting trip through the pulsating big city, where Cleo not only meets crazy guys and urban legends, but also slowly gets closer to Paul. Arriving in Berlin's underground, Cleo must ask herself the most important question of all: Should she even turn back time?