The main characters, Julia and Walter, find themselves in a mysterious place after a car crash. It's like a parallel universe where good and evil are fighting for control. In this new world, they meet lots of people who played important roles in human history. Julia and Walter fight to return to their world. In doing so, they must also make use of the skills of the important scientists they encounter. The author skillfully uses a tour d'horizon to clarify historical connections. He playfully links the biographies of these personalities with a fantastic plot that is full of surprising twists and turns.