Book 3: In "2095" While on a field trip to New York's Museum of Natural History, Joe, Sam, and Fred travel one hundred years into the future, where they encounter robots, anti-gravity disks, and their own grandchildren. In "Tut, tut" the three friends travel back to ancient Egypt, only this time they have some unexpected company. Joe's sister Anna and her cat Cleo get caught up in the time travel, too. The three boys find themselves trying to avoid becoming mummies or crocodile food. They meet a young king, a great Pharaoh, and a wicked high priest. To their surprise, Anna might be the only one who can help them find the magic book and get back home.