In their latest time travel adventure, Fred, Joe, and Sam meet Leonardo da Vinci and try to avoid becoming toilet scrubbers in a sixteenth-century Italian army.
Thanks to their magical book, Fred, Sam, and Joe inadvertently travel through time to 1877 New York City, where they and their granddaughters, who have also come from the future, help them find a way back to their own time.
Sam, Joe, and Fred finish their school project on ancient Egypt without using their magical time travel book, but when Joe's sister Anna plays with it and travels to the land of pyramids, they must follow her back in time to bring her back to 1996.
Joe, Fred, and Sam find themselves whisked by The Book to the main ring-ball court in Chichin Itza, Mexico in 1000 A.D., where they must play for their lives against a Mayan High Priest who cheats.
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.
As they are about to go on stage, Joe, Fred, and Sam are transported back to the time of Zeus and the other gods in Greek mythology, who, strangely enough, behave much as the characters in the trio's class play.
While on a sleepover, Joe and Sam come face-to-face with Frankenstein's monster, and must use their time-warping power to take him back to his nineteenth-century creator.
Sam says the word "Thursday" one too many times next to the magic book and lands himself, Joe, and Fred in 1000 A.D. Vinland, narrowly escaping a Viking blitz and setting off on a voyage to Greenland with Leif Eriksson.
Joe, Fred, and Sam demonstrate some of their favorite professional wrestling moves, including the "Time Warp Trio Blind Ninja Smackdown," when they're transported to ancient Rome and forced to fight as gladiators in the Colosseum.
