The fireflies grateful at being freed help the KND find the location of Knightbrace's Cavity Cave, from where Numbuh 1 will find the passcodes to open the path to Knightbrace's lair. Once here, Numbuh 1 crosses a river of pure fluoride and gets to a Dentadrone spawner to short circuit the entrance to Knightbrace's lair. Once in the lair, Numbuh 1 finds Knightbrace in his Dental Assault Chair.