After a freak jousting accident at a Medieval Times restaurant, SpongeBob and Patrick are transported to a medieval version of Bikini Bottom. The two are mistaken for great knights, and soon they are entrusted with the quest of saving King Krabs' daughter, Princess Pearl, from the clutches of the evil wizard Lord Planktonamor. To keep them company, the King sends along Squidly, the court jester (who was recently thrown in the dungeon for not being funny).