The stone tablet has disappeared and, without it, Kiyo and Zatch wonder how they will ever get strong enough to become king. To do so, they must uncover the mysteries of the spell book. Just then, a small puppet-like mamodo named Kido and his partner Doctor Riddles appear. They challenge Kiyo to a contest against a group of super-powered creatures called The Majestic 12. But, it turns out that the Professor only uses the group to set up a riddle, which Kiyo guesses the correctly. Surprisingly, the 12 depart. The following day, Doctor Riddles comes again to challenge the two to a battle. Riddles states that he will teach Kiyo the secrets of the spell book if Zatch and Kiyo can beat him. However, once the battle begins, Zatch and Kiyo find themselves continually routed by Kido's potent powers. The Doctor gives Kiyo some hints in the guise of a series of riddles. Kiyo comes to realize that the book does not give birth to the power of the mamodo, but the power lies within the mamodo all along. As Zatch starts to understand, the sixth spell appears in his book. The spell causes a lightning bolt to strike Zatch's body. Zatch's body begins to glow, and for the first time, he remains conscious during the attack. (Source: IMDb)

Aired on: 3/20/2004