A knight in shining armor asks Thud and Blunder to join him on a heroic journey But it leads to a deadly dungeon. The dungeon has lots of treasure But it's guarded by the Ultra-Mega-Lich. The knight says he can easily defeat the monster But his armor and sword look unused. How can two nine-year-old knights in search of adventure turn down such a Great Opportunity? Will the Ultra-Mega-Lich eat their souls? Will Thud and Blunder finally find fame...