SpongeBob and Patrick are running up to the Medieval Moments stadium/restaurant to watch the jousting tournament. Upon their arrival, Morrie announces the tournament and asks for two volunteers to take part in the jousting, choosing SpongeBob and Patrick. Unaware that they are actually going to be in the tournament, and not just watching upclose, they are forced to mount seahorses and start jousting against each other. They are both launched off of their seahorses into the air, and land in a small field in 8th Century Bikini Bottom.
A large group of knights on seahorses surround the duo. They lock SpongeBob and Patrick in the dungeons because they think they are evil. There they see a squid playing a clarinet. They think it's Squidward, but the squid's name is actually Squidly. in the meantime, SpongeBob and Patrick still think this is part of the Medieval Moments tournament. Because Squidly can't play the clarinet properly, he cursed that his 7th grandson (Squidward) won't be able to play the clarinet a few times worst. SpongeBob still thinks they are in the restaurant, and comments on how authentic the "props" are. Later, SpongeBob, Patrick and Squidly are sent to the king (Mr. Krabs), who orders them to be executed because of an insulting song they sing in front of him. However, Princess Pearl reminds King Krabs of a prophecy in a stained glass window, which says that two brave knights will fall from the sky and will be sent by a king and defeat the dragon controlled by the evil wizard Planktonimor Plankton that is destroying the kingdom. Just then, the dragon, a giant jellyfish smashes through the wall with the prophecy on it.
Under Planktonimor's orders, it kidnaps Pearl in order to kill her and effortly flicks King Krabs into the guillotine, smashing it just before SpongeBob can be executed. The dragon flies away, and King Krabs begs SpongeBob and co. to rescue her, treating them worshipfully until seeing a section of the prophecy showing him kicking out SpongeBob and Patrick. He tells them to defeat the dragon, then proceeds to kick them out. However, SpongeBob and Patrick decide to literally kick themselves out, and Squidly comes along as well after orders from King Krabs. On the way, they stop off at the Blacksmith's to get some armour and weapons, only to find that all of the weapons are too heavy except for the jellyfish net. As they reach the bridge to Planktonimor's tower, they are attacked by a Dark Knight, who guards the bridge. The Dark Knight is revealed to be none-other than a medieval Sandy (who, unlike the present Sandy, does not need an air helmet). A duel ensues, with SpongeBob ultimately winning due to his karate prowess. After the battle, SpongeBob decides to spare her life.
Amazed, the Dark Knight decides to follow SpongeBob, Patrick and Squidly on their quest (and learn a trifle of Karate, according to her). Back at the King's castle, Krabs receives a note saying that Princess Pearl will die if he doesn't hand over the village and his throne. SpongeBob, Patrick, Squidly and the Dark Knight make an incredibly long journey to the top of the tower, where SpongeBob distracts Planktonimor while Patrick, Squidly and the Dark Knight try to rescue Pearl. However, the Dragon soon arrives and manages to zap the heroes. Just as the Dragon is about to finish off SpongeBob, he pulls out a Krabby Patty he had been saving for lunch. The Dragon eats it and likes it so much that it becomes obedient to SpongeBob, zapping Planktonimor. The heroes return to the village to have their victory celebrated, and King Krabs is seen cooking Krabby Patties (on a modern grill) for the dragon. However, as soon as Squidly starts playing his clarinet, everybody hates it, and someone throws a rock at him. The seahorses become scared and launch SpongeBob and Patrick into the air. They land back at the tournament in present day, and SpongeBob says "I guess I shouldn't have agitated that Seahorse. That was some dream I had, eh Patrick?" Patrick then replies "Try telling that to Squidly." He then stands up, revealing a horribly squashed Squidly underneath him. Then Squidly makes this last note.
On the Season 4, Volume 1 DVD, the storyboard shows SpongeBob and Patrick making sure they are ok after falling out of the sky.
( ‣ ) Associated production music
( • ) Original music
( ◦ ) SpongeBob music
‣ ? [title card] • ? - Nicolas Carr [opening] •Vibe Sting - Nicolas Carr [SpongeBob, Patrick stop running] • ? - Nicolas Carr, Barry Anthony [fanfare] ‣ ? ["Welcome to Medieval Moments."] ‣ ? [in the stadium] • ? - Nicolas Carr, Barry Anthony [fanfare] ‣Tavern Tales - David Snell [jousting tournament announced] ‣March to Battle - Laurie Johnson [SpongeBob and Patrick on seahorses] ‣Chariot Race - Helmuth Brandenburg [seahorses charging toward each other] ‣Entry of the Heroes A - Gregor F. Narholz [SpongeBob and Patrick surrounded by knights] ‣Mounting the Scaffold 1 - Gregor F. Narholz [SpongeBob and Patrick locked in the dungeon] • ? - Nicolas Carr, Barry Anthony [Squidly playing clarinet] • ? - Nicolas Carr ["Dost thou talketh to me?"] ‣ ? ["Scoff not, young squire."] ◦I Was the King's Favorite Fool - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly sings] ◦The Dragon is Here - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly sings] ‣Evil Mind 8 - Dick de Benedictis [SpongeBob realizes they went back in time] ‣The Wicked Witch - John Fox, Otto Sieben ["The king wants a word with you two."] ‣ ? [Krabs crying] ‣Slave Caravan 2 - Gregor F. Narholz ["It's that wretched wizard, Planktonimor!"] ‣Dance Macabre - Keith Mansfield [SpongeBob, Patrick and Squidly sent in] ◦The King is Bad - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly's song] ‣ ? [Krabs calls guards] ‣Floating Fortress A - Gregor F. Narholz [guillotine] ‣ ? [choir] ‣ ? [Pearl explains the prophecy] ‣Rescue - Cecil Milner [dragon kidnaps Pearl] ‣Wargames Linking Section (g) - Keith Mansfield [SpongeBob at the guillotine] ‣Hawaiian Cocktail - Richard Myhill [SpongeBob and Patrick crying] ‣Conflict Link 2 - Richard Hill [Krabs crashes into the guillotine] ‣Anguish - Richard Hill [Pearl screaming for help] ‣ ? [choir] ‣Big Bad Giant - Paddy Kingsland ["You two! My apologies!"] •Vibe Sting - Nicolas Carr ["Huh? What's this?"] •Steel Sting - Jeremy Wakefield [lost piece of the prophecy] ‣The Merry Hunters - Paddy Kingsland [SpongeBob and Patrick kick themselves out] ‣ ? [blacksmith] ‣Final Resolution - Gregor F. Narholz ["I'll have the rent when I have it!"] • ? - Nicolas Carr ["Hmm..."] ‣ ? [Patrick's helmet] ‣Trumpet Call 1 - Sam Fonteyn [SpongeBob in a suit of armor] ‣Retreat - Sam Fonteyn [sword] ‣ ? [SpongeBob packed a lunch of Krabby Patties] ‣Pure Evil - Larry Hochman ["This be the legendary prophecy?!"] ‣Entry of the Heroes D - Gregor F. Narholz [dark knight] ◦Spare Us, Dark Knight - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly sings] ‣Final Resolution - Gregor F. Narholz ["Dark Knight?!"] ‣ ? [SpongeBob and Sandy fighting] ‣Entry of the Heroes E - Gregor F. Narholz [Sandy defeated] ‣ ? ["I don't understand a word you just said!"] ‣Final Resolution - Gregor F. Narholz ["Medieval Sandy? You don't look so good."] •Vibe Sting - Nicolas Carr [Sandy wakes up] ‣Fanfare of Rome - David Farnon ["Thou hast spared me, kind and noble sponge."] ‣Big Bad Giant - Paddy Kingsland [back at the castle] ◦The Princess Screams - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly sings] ‣The Wicked Witch - John Fox, Otto Sieben ["Doth we all remember thy plan?"] ‣Death and Destruction 2 - Harry Bluestone, Emil Cadkin [Pearl screams] ‣Dramatic Cue (g) - Ronald Hanmer [running up the stairs] ‣House of Horror - Larry Hochman ["Soon the king's village will be mine!"] • ? - Nicolas Carr, Barry Anthony [SpongeBob weakly arrives] ‣Dramatic Impact 2 - Ivor Slaney [SpongeBob gasps] ‣Thrust and Parry - John Hawkins ["Prepare to be vanquished!"] •Vibe Sting - Nicolas Carr ["Huh?"] ‣Thrust and Parry - John Hawkins [Planktonimor zaps SpongeBob] ‣Dangerous C - Mladen Franko ["Sicceth them, boy!"] ◦There Once Was a Dragon - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly's limerick] ‣Invincible Armada - Gregor F. Narholz [dragon zapping everyone] ‣Knight Errant - Sam Fonteyn [SpongeBob uses jellyfish net to capture dragon] ‣Death and Destruction 2 - Harry Bluestone, Emil Cadkin [dragon zaps jellyfish net] ‣ ? ["Yay!"] • ? - Nicolas Carr [dragon eats Krabby Patty] ‣Romantic Ending - Harry Bluestone, Emil Cadkin ["No, no, no! The horror, the horror!"] ‣ ? ["Destroy them!"] ‣Dramatic Encounter - Gregor F. Narholz [dragon zaps Planktonimor] • ? - Nicolas Carr, Barry Anthony [fanfare] ◦Tis All Ended Well - Steven Banks, Zeus Cervas, Erik Wiese, Andy Paley [Squidly's song] ‣Sherwood Green (b) - Richard Myhill [Krabs cooking patties] • ? - Nicolas Carr, Barry Anthony [Squidly playing clarinet] ‣Six Powerful Cues (d) - Wilfred William Burns [SpongeBob and Patrick thrown into air] ‣Tavern Tales - David Snell [they're back in the stadium]
"Dunces and Dragons" was ranked #3 during the Best Day Ever event on November 9–10, 2006.
Before 1100 (Medieval era) (majority of the episode)
The viewing figures of this episode - 8.5 million - are some of the highest in SpongeBob's history.
This episode was first seen in a New Years 2006 commercial.
King Krabs' castle looks like the Krusty Krab in design.
The Dark Knight does not have an air helmet, even though she needs one to breath underwater. Perhaps this could be explained by Planktonomer using his magic to make her breath underwater.
SpongeBob says that it was just a dream, but it is impossible to be a dream because they both can't have exactly the same dream and the fact that a single movement can change the whole dream. So most likely they were hallucinating.
It is more likely that SpongeBob and Patrick actually got flung over to some other place where Squidward, Mr. Krabs, Sandy, Plankton and Pearl were actually putting on a show set in medieval times, playing medieval time counterparts of themselves and they were all still in the present day this whole time and weren't really in medieval times at all. At the end, Squidward (as Squidly) got flung back along with SpongeBob and Patrick.
This is the second time a reference to Dungeons and Dragons is used, the first time was in Mid-Life Crustacean.
According to the Credits (at least the ones on the DVDs), there was supposed to be a "SpongeBob Doppleganger" who would have been voiced by Rodger Bumpass.