After surviving the Sea of Monsters, the Yellow Submarine finds itself in a void. Everyone becomes concerned as Fred checks the status of the Yellow Submarine. 

Fred: By Neptune's knickerbockers, she's puttered out!

King: Maybe we should call a road service. 

Luz: Can't. No road. 

At this point, everyone crowds around the worn down motor of the Yellow Submarine. Willow picks it up.

Willow: I know something about motors. Let me have a look.

Gus: You know about motors?

Willow: A thing or two. My Dad once helped me build one for a toy car! Let me peruse it.

Willow peruses the motor. During this, she puts her finger in one of the sockets. Willow was then shocked. 

Amity: Are you okay?

Willow: I think I burned my finger.

As the Yellow Submarine drifts aimlessly through the void, Luz spots something in the distance. 

Luz: Hey guys! I see something!

As Luz says this, everyone looks out the window to see something in the distance. The Yellow Submarine drifts closer to the figure. 

Gus: What do you think it is?

Eda: Nothing. 

King: Looks like nothing. 

Amity: It's a local inhabitant.

Eda: He's probably one of the nothings.

Amity: At least that's something. Let's show him our motor.

Eda: Steady on. You don't want to show your motor to just anybody.

King: But this is a nobody!

The Yellow Submarine then sails closer to the figure. The figure was a short, stocky creature with brown and pink like fur. His face is completely different than the rest of his body. Being completely light blue with a slight blue outline, large red lips, tiny eyes, large green squares with lines and blue and yellow teardrop shaped marks on his cheeks. He was typing on a typewriter.

???: Medic, pedic, zed oblique, orphic, morphic, dorphic, Greek. Ad hoc, ad loc and quid pro quo. So little time, so much to know.

As Luz and the others exited the Yellow Submarine and approached the creature, they were all confused by his mannerisms. 

Luz: Um...excuse me? Can you tell us where we're at?

???: A true Socratic query, that.

Eda: And who the hell are you?

???: Who? Who indeed am I?

The creature then gives everyone visiting cards all which had different names. 

Luz: Jeremy? 

Amity: Hillary?

Willow: Boob? 

Gus: Ph.D?

Eda/King: What? Who? 

The creature now known as Jeremy Hillary Boob Ph.D begins to chuckle. 

Jeremy: Eminent physicist, polyglot classicist, prize-winning botanist, hard biting satirist, talented pianist, good dentist, too.

Eda: A lousy poet too. Great. Just when you thought this trip couldn't get any weirder. 

King: He's lost his mind!

Jeremy: Critic's voice, take your choice.

Willow: Must be one of them angry young men.

Gus: Or a daffy old creep.

Jeremy: I, daffy old creep?

It soon became clear that Jeremy was an odd one. 

Amity: Do you speak English?

Jeremy: Old English, middle, a dialect, pure...

Luz: What about Spanish?

Jeremy: Latin, traditional, romantic, a dialect, pure....

Willow: Do you...speak plainly?

Jeremy: You know, I'm not sure.

Luz: He's so smart, he doesn't even remember what he knows.

Eda: Or his head is so screwed loose that he doesn't even know who he is. 

Amity: Why don't we show him our motor?

Willow: Should we really...show him our motor?

Amity: He may not have seen one before.

Luz: I wouldn't hurt to try.

Luz and Amity then hands Jeremy the Yellow Submarine's motor. Jeremy looks at the motor with a curious look on his face. 

Jeremy: Turbo-prop, super-combustible spring. Metrocyclonic and stereophonic, this motor, I see, has a broken down thing.

As Jeremy fiddles with the motor, he fixes it as the motor runs good as new. Seeing this shocked everyone. 

Amity: He fixed it! 

Eda: He fixed it?! 

Willow: We should probably get going. 

Jeremy: I must complete my bust, two novels, finish my blueprints, begin my beguine.

Eda: Do you always have to talk in rhyme? 

Jeremy: If I spoke prose, you'd all find out, I don't know what I talk about. Ad hoc, ad loc and quid pro quo. So little time, so much to know.

Jeremy then begins writing something on a piece of paper with his foot. 

Gus: What are you doing? 

Jeremy: The footnotes for my 19th book. This is my standard procedure for doing it. And while I compose it, I'm also reviewing it.

Willow: Were your notices good?

Jeremy: It's my policy never to read my reviews.

Willow: There must be a word for what he is. 

https://youtu.be/RiTwf45cH6M

As Jeremy continues to do multiple tasks around his nowhere land, Luz couldn't help but notice something familiar about Jeremy. Jeremy reminded Luz of herself. 

Eda: Well let's get out of here.

As everyone was about to leave, Jeremy looks at the group leaving and begins weeping. Luz glances to see Jeremy weeping. Feeling bad for him, Luz approaches Jeremy.

Luz: Um...Mr. Jeremy? You can come with us, if you like.

Jeremy: You mean you'd take a Nowhere Man?

Luz: We'll take you somewhere. 

As Luz brings Jeremy onboard the Yellow Submarine, everyone was confused as to why Luz invited Jeremy onboard. The only ones who seemed visibly annoyed at this were Eda and King. 

Eda: Down the hatch, boob. 

Jeremy: Down the hatch. A quite curious phrase. The middle South Midlands Victorian phase. It's usage undoubtedly on the increase. I must work it into my New Statesman piece.

King: Down the hatch! 

Jeremy: Indeed!

As Fred puts the motor in place, the Yellow Submarine powers up.

Fred: Steady now, crew. Prepare to go forward.

Luz: Forward!

King: Forward! 

Gus: Forward!

Fred: Forward!

With that, the Yellow Submarine continues it's voyage. After their little detour, the crew of the Yellow Submarine continued it's voyage to save Pepperland from the Blue Meanies. But the voyage was not over yet.