|Saw Boss sends his Monster Minds to a planet with amazing natural resources where plants grow to enormous size. Jayce and the Lightening League attempt to warn the inhabitants of the impending Monster Mind invasion, but everyone except Oon is captured by the planetís massive mecha guardians known as Crusaders. While inprisioned, the Lightening League witnesses the Crusaders attempting to pull a shield out of a stone ala King Arthur. Whoever pulls the shield from the stone will become the new leader of the Crusaders. Jayce is allowed to try, but it is Oon who accidentally pulls the shield loose and leads the Crusaders on a successful battle against the Monster Minds.