The third steam punk adventure of the Prehistoric Journey series takes the four time travelers to the unexpected once again. It's 1910, Captain Limmerick, Dr. Dimitrikov, Rosa, and Amoli mistakably time travel to 1487 England just after The War of the Roses. The queen is enchanted with Limmerick and has him knighted, where he must undergo challenging jousting tournaments, and prove his abilities as a skilled archer. He becomes entangled with the king's rivals and finds himself in near death situations. He uses his position, as part of the king's court, to rescue his friends from the castle dungeon, but struggles with the crown's idea of chivalry.

During this voyage, they discover prehistoric mammals have been misplaced from when they tried to close the passage through time in Celtic Odyssey. The four time-travelers attempt to return to 1910, but another error occurs and for the first time, they travel to their future - 1970.