In Pops' room, his alarm clock rings and he gets up. Pops takes a shower, then he walks out of the house, whistling, as a huge cardboard of a castle with a banner that says "Kingdome of Parklandia - Est. 1452" gets put up, covering the front of the house. Pops stops walking and sees medieval props and people set for a Renaissance fair. "Aah! What in the dickens?!" He gets scared, backs up and sees the castle carboard-covered house. "Where did the house go?! I've gone back in time."

A guy on stilts walks in front of him. "Watch where thou doth walketh!" He continues walking. "Oh, my!" Pops bumps into a dwarf. "You like tomatoes? How about these tomatoes?!" The dwarf starts throwing tomatoes at him. "How about another?! And another?!" He laughs. Pops starts running only to run into three gypsies attempting to charm him only for him to continue running away. "BAD SHOW!!!!"

(30 Minutes Later)

At the park, the staff are sitting on the stairs with Benson carrying a box of costumes. "Alright, now, I know things have been crazy with the dome and everything, but thanks for getting up early and setting up for the Renaissance fair. This is gonna be a big money-maker for us. One last thing. As of this moment, your modern selves are no more." Benson starts throwing the costumes at the gang. "Mordecai and Rigby, you'll be Mordicus and Rignatius, lowly street vendors.

(Y/n), you'll be Princess (F/n). "Skips, you'll be Barnaby the Ripped, guard to the king. Fives and Muscle Man, you'll be Palom and Porom, gatekeepers." Benson said. "I'm not wearing this, bro. This cut isn't flattering to my butt." Muscle Man said. "And, of course, I will play King Edmund of Parklandia." Benson puts on a crown and robe and takes out a wizard costume. "Wait, so if you're the king, does that mean (Y/n) is playing as your daughter?" Rigby asked. "Yeah." Benson shrugs. "Wait, but King Edmund didn't have a dau-" Rigby was interrupted. "Just roll with it, okay? Where's my wizard? Where's Marvolo?" Benson asked.

"If you mean Pops, nobody's seen him all morning." Skips said. "What?!" Benson groans and holds up a scroll-like poster. "He's the star of our big closing ceremony, Marvolo vs. the Dragon!" He said. "We have a dragon?" Rigby asked. "Yes!" Benson points behind a huge box containing a mechanical dragon inside it. "Without a big closure, the commoners will demand refunds! Find Marvolo and don't breaketh thy character or I'll smite thee with unemployment!" The gang groans as they start putting on their costumes except for Muscle Man and Fives. "Eh, the things I do for a paycheck." Skips said. "Tell me about it." (Y/n) said. "I'm still not gonna wear this." Muscle Man said. "I hope the power doesn't go to his head." Rigby said.

Time Skip

Pops sits on a rock with a sword on it, looking worried. Pops tries to talk to a fairgoer walking by. "Uh, excuse me, help? I'm trying to get to my own time." He said. The wench approaches Pops with another wench. "What's the matter, love, you lost?" They laugh as they walk away. A minotaur approaches Pops while holding a corn dog. "Freak!' He walks away. "Oh, another fine mess I've gotten myself into. How will I ever get home?" Pops sees Mordicus and Rignatius at a nacho vendor cart. "Augh! This costume is making my butt itch." Rigby said.

"Rignatius, stay in character or we're gonna get fired." Mordecai said. "Oh, sorry. Mine butteth itcheth. No, wait. My bottometh? Me cheeks?" Rigby asked. "Yeah, that worketh." Mordecai said. (Y/n) then approaches them. "(Y/n), what're you doing? Aren't you supposed to be at your post?" Mordecai asked, and she shrugs. "It's too boring!" She said. "Oh I see, so you're a princess of adventure, huh?" Rigby asked with a smirk, and she smirks back. "Maybe." She said.

"(Y/n), Mordecai and Rigby, I thought I'd never see you again!" Pops said. "Oh, dude, Pops!" Mordicus elbows him. "Uh, I mean, Marvolo!" He said. "Marvolo? No, It's me, Pops." Pops said. "No, no, you are Marvolo, huh?" Mordicus winks. "The wizard, yeah?" He asked. "What's wrong with your eye?" Pops asked. "Listen, Marvolo, you have a very important job to do: you have to defeat the dragon, or everyone will demandeth a refund." (F/n) said. "Dragon?! I won't fight a dragon, (Y/n), Mordecai and Rigby!" Pops said. "Marvolo, do you wanna be sacked?

Call us Mordicus, Rignatius and (F/n)." Mordicus said. "Yeah, the (Y/n), Mordecai and Rigby you know haven't been born yet."  Rignatius winks his eye. Pops gasps as Mordicus punches Rignatius' arm. "Cometh with us, and we shall explain everything. You don't wanna make my father King Edmund mad, do you?" (Y/n) asked. "Mad king?!" Pops screams and runs away. "Your dad's not gonna like this." Mordicus said. The king's box seat inside medieval-themed colosseum. "RAAAAAGH!! What doth thoust mean you lost him?!" He eats grapes fed by Starla, dressed as a tavern wench, as she walks away. "He got frighten and fled. He seems really confused, father." (Y/n) said. "Impossible. This doth be unacceptable!" Benson shouted.

"Hey, man, don't yell at us! Pops is the one flipping out!" Rignatius gasps. A woman gasps. "Flipping out? Mine ears ache from period-inappropriate prose." She said. "Mayhaps a refund is in order, Auntie." A kid said. King Edmund gasps. "Pay no heed! The king wishes good tidings on thee all!" He throws a bunch of coins at the woman and kid. "Huzzah! Huzzah!" The kid and woman said. "Now, go forth and encourage others to spend coin of their own!" He turns red and turns to Mordicus and Rignatius. "What did I say about breaking thine character?!" He asked. The duo bow down to the king. "Forgiveness, forgiveness!" They said. "No matter. It appears I must fetch Marvolo mineself." King Edmund said. Muscle Man and Fives are in pillory stocks with a squire, the dwarf and the gypsies standing.

"Augh! This is bogus, like, super lame-o deluxe!" Muscle Man said. "Yeah, totally whack, guys!" Fives said. "By order of Mad King Edmund, these two shall be punished for the crime of not staying in character!" A squire said. "You maketh me sick!" The dwarf throws tomatoes at Muscle Man as they walk away. "Fine, I'll wear the costume." Muscle Man said. "Oh, Muscle Man, Hi Five Ghost, you are stuck in this dreadful place, as well?" Pops asked. "Our names are Palom and Porom, sir." Muscle Man said. "The mad king's reign of terror must end, Marvolo." Fives said. "I'm not Marvolo! Why does everybody keep calling me that? I just wanna go home." Pops said. "Only you can end this. End this, Marvolo." Muscle Man said. "Yeah, end this." Fives said. The squire spots Pops. "Hey! Seize Marvolo by the order of Mad King Edmund! He's, like, really, really upset about this. Seize him!" Two knights who are drinking with a Viking and a centaur start chasing Pops who runs away.

"Go, bro!" Muscle Man shouted. "Quiet, oaf!" Pops throws a tomato at Muscle Man. Pops continues running away as he runs into a blacksmith who is hammering a sword, then into an executor's eagle that screeches at him, then he sees a poster for "Marvolo vs. the Dragon,"  starring himself as Marvolo. "NOOOOOOOO!!!" King Edmund and two knights, who are riding on horses approach Pops. "Marvolo the Wizard.

A powerful dragon hath decsended upon us, and only ye can stop it." King Edmund said. "Oh. You must be the mad king." Pops said. "Look, Marvolo, if you don't slay the dragon right now, the commoners will demand refunds, and my kingdom shall crumble!" King Edmund said. "For the last time, stop calling me Marvolo!" Pops starts running again, only to bump into the poster and falls to the ground, knocked out. He wakes up in a room and sees Barnaby dressing him up in his wizard costume. "Skips, am I back home?" Pops asked. "I know not of this Skips, I am Barnaby the Ripped. King Edmund hath sent me to prepare ye for battle against the dragon, Marvolo." Barnaby said.

"What?" Pops is now in his Marvolo costume. "Oh, no." He said. "Take this." Barnaby gives him a wand. "For the closing ceremony, all you have to do is point it at the dragon and press ye button to defeat it. You can end all of this, and we can go home. The Kingdome of Parklandia awaits thee." He leaves the room. "Everybody's telling me I'm Marvolo." Pops goes to the mirror. "Maybe, I am Marvolo. Who am I?" Pops asked. "You are Marvolo." Marvolo said. "No, it can't be." Pops said.

"It is so. I am you, and you are me." Marvolo said. "Then it doth be true. Oh!" Pops said. "Yes! You are ready. It is time to face your destiny. End this." Marvolo said. "I... am Marvolo!" Pops said. Back at the colosseum, trumpet players play a fanfare. "Presenting King Edmund of Parklandia! And his daughter, princess (F/n)!" The squire said. "My loyal subjects, thank ye for joining me on this glorious day! I trust your experiences in my Kingdome hath been most pleasurable. May we rejoice in hopes that nothing bad should ever happen." (F/n) said. There's a silence that follows. "She said, "May we rejoice in hopes that nothing bad should ever happen"!" King Edmund shouted.

"Yeah, yeah, I heard you." Palom opens a gate and the dragon comes out, just standing as the crowd is barely impressed. King Edmund turns to Mordicus, who is holding a controller. "Fire, the fire!" Mordicus presses the "fire" button and the dragon breathes fire, making the crowd really impressed. "Oh, no! This is truly the greatest calamity in the history of Parklandia! There is only one wizard who put an end to the reign of terror! Presenting Marvolo the Wizard!"

(F/n) shouted. Marvolo comes out and faces the dragon. He tries to charge, but falls down as the crowd boos at him. "Man, this is lame." A knight said. "We should've gone over to the Ren fair over at East Pines instead." Another knight said. "Ye olde refund! Ye olde refund!" The knights shouted. "Ye olde refund! Ye olde refund! Ye olde refund!" The crowd shouted. "Fight, Marvolo, fight to the death!" Marvolo gets up and charges at the dragon, but it swats the wand right under the King's box seat. "Here, give me that." Rignatius grabs the controller as he and Mordicus are struggling for it.

"Leteth go, man!" They toss the controller as it lands on Rignatius' tray of nachos on the ground, making it short out, causing the dragon to malfunction, move on its own and go crazy as the crowd cheers, then it breathes fire as the crowd runs away. King Edmund jumps into Barnaby's arms. "Servant, save ye king!" Pops watches the mechanical dragon breathe fire on the colosseum. "Marvolo, get thine wand and press the button!" Skips shouted.

Pops sees a ladder goes to a hammer, breaks the glass, and uses the ladder to grab the wand as the dragon faces Pops. "Alright, you big brute, this ends now!" Pops presses the button, and the wand flies out and lands in a puff of smoke, which annoys the dragon. "I did it. Good show!" The dragon knocks Pops off the ladder. "POPS!!" (F/n), Mordicus and Rignatius shouted. Pops hangs onto the dragon's snout as it flings him off, sending him flying to a tower where the knights are as is starts to fall.

"Best Ren fair ever!" A chain of towers falls as everyone runs away, and the last tower falls and collapses right on the dragon. Marvolo emerges from the rubble and walks up to the now-destroyed dragon. "I did it, I defeated the dragon! Now, I get to go home!" The dragon's lower jaw breaks and falls on Pops, knocking him out. Pops wakes up in his bed in his room as (Y/n), Mordecai, Rigby, Muscle Man, Fives, Benson and Skips are standing there, watching him.

"He's waking up." Rigby said. "King Edmund? Barnaby? Rignatius and Mordicus? Princess (F/n)?" Pops asked. "No, Pops, it's us. Everything is back to normal. The park broke even and all is well." Benson said. "But I was in medieval times. It was so real." Pops points at Benson. "You were a mad king." He points at (Y/n). "You were a princess." He points to Rigby, Skips and Mordecai. "And you were there, and you, and you, and I was..." Pops gasps dramatically as he sees Marvolo in his mirror. "Shhhhhhhhh." He leaves and drives away in a vehicle.