Ultima: The Crossing of Universes. In this story, Nick and his friends go on a quest to find the ultimacrystal while trying to protect Kristy, now a primary target for the villains.
4.1) Kidnapped Kristy
4.2) XIAOLIN SHOWDOWN!
4.3) The Emperors New Jewel
4.4) Defend Cluster Prime
4.5) Return to the Lair of the Organization
4.6) Just Some Running and Fighting