It was Sam's bright idea to look for the inventor of The Book. But when the guys land in fifteenth-century Italy, they meet up with Leonardo da Vinci. You probably know that Leonardo da Vinci painted the Mona Lisa. Did you know that he also invented an early version of a helicopter and a tank, and that he planned to execute the Time Warp Trio for spying on his inventions? Now it's going to take at least three more bright ideas, two magic tricks, and one great invention to get the guys out of hot water and safely back home. . . .