(As the opening credits roll, pictures of Dexter, Computress, Mandark, and Dee Dee are drawn on a white background, then are colored in along with several zig-zags appearing on the corners of the screen; the episode title is then written in the middle of all four characters)
(Fade in to a grassland; a bird is sitting on a tree singing; a little boy, revealed to be a caricature of Tyler Samuel Lee, walks in from the right and stops)
Tyler: My name is Tyler Samuel Lee. I am 6-- I am 6½, and my birthday is November 10, 19--.
(A card with the number 6 slides on; a ½ sign slides next to the 6; the card then slides down to show Tyler standing next to a birthday cake sitting on a blue table; he blows on the cake and it splatters onto the screen; what's left of the cake then slides downward to show Dexter in his laboratory; he is seen pressing a button on a remote as he walks through his laboratory)
Tyler: This episode is about Dexter, that doesn't know that his new neighbor is Computress with his brother Mandark.
(Slide to a red house; inside, Computress, a tall computer with legs and a monitor for a head, is seen entering Mandark's laboratory; Mandark himself is seen at a console pulling levers and pressing a button; it then cuts to Mandark giving Computress a side hug, the latter with his arms folded, looking angry, and blows a raspberry at Mandark)
Tyler: And Computress hates Mandark too, because he wrecked his lab.
(Mandark throws down an invention, kicks a set of tubes, and is seen smashing a server with a swivel chair; Computress, noticing the commotion from behind, gives the side eye to Mandark while gritting his teeth; he turns around to see the damaged server)
Tyler: And Computress had to rebuild it all alone.
(A montage of Computress repairing Mandark's lab occurs; he is first seen using a power drill on the wall, a handheld power hammer on some nails, putting a pointed structure inside a circular hole, and placing patches on three walls whilst riding a chair; Computress rubs the sweat off the top of his head as if he were saying "Whew!"; Mandark towers over Computress with a mischevious smile; he then kicks Computress's rear twice; cut to the outside; Mandark kicks Computress, who has a static screen on his face, onto the street; Computress lays on his stomach, shakes his head, and looks at Mandark's house annoyed)
Tyler: And now...
(Another yellow card with the aforementioned words written in blue slides in from the left, the word "AND" is seen on top and the word "NOW..." slides in from the left on the bottom; it then cuts to Dexter standing in hs lab)
Tyler: Computress and Dexter teamed up...
(Computress enters from the left; he and Dexter shake hands, jump into the air, strike some poses, and high-five each other; it then fades to Dexter writing out a plan on a chalkboard titled "To Get MANDARK" on a chalkboard as Computress is seen standing to the right of the chalkboard observing; after writing "SHRINK RAY", Dexter sticks his right index finger up and Computress rolls in from the right)
Tyler: ...to shrink Mandark's head into nothing with the shrinking ray...
(Fade to Dexter using a monitor to perform a simulation; on its screen, an outline of Mandark's body appears as Dexter uses a lever to move a red crosshair toward the head; as the screen flashes red and lime green, Dexter pulls the left lever and the silhouette is shown getting its head shrunk on the monitor, with the head being significantly smaller than the rest of the body; Dexter and Computress are both seen giggling)
Tyler: ...and to get Dee Dee to have no spirit instead of a free spirit.
(Cut to Dee Dee walking back and forth in front of Dexter and Computress; Dexter, who is seen holding a remote, zaps Dee Dee with a yellow beam; Dee Dee goes from looking cheerful to having a dazed expression; she holds out her arms like a zombie and leaves the lab as Dexter and Computress both laugh)
Tyler: And... Dee... And... They... And...
(A transition appears; it first starts with "AND", followed by an image of Dee Dee, another "AND", a picture of Dexter and Computress where the latter is seen waving his hand, and then a third "AND"; it then rips to Computress sitting at a table holding a pencil while a sheet of paper is in front of him; he is thinking; suddenly, he smiles as he gets an idea and starts writing)
Tyler: Computress wrote the love letter to Dee Dee that was signed "From Mandark" and the letter said that I'll be... that "I'll be in Dexter's lab and I love you." And... and uh... and... well.
(Computress writes out the letter to Dee Dee from Mandark; afterwards, he starts laughing; as Tyler thinks of something to say, Computress tries to think of what else to write; he then shrugs, puts the letter into an envelope and licks the seal; outside, Computress hands the envelope to a mailman, who drives off in his mail truck as Computress waves; cut to Dexter)
Tyler: And Dexter said...
(Dexter lifts his finger and prepares to speak, but becomes baffled when Tyler trails off; it then cuts to Dexter sitting at a desk writing his own letter)
Tyler: ...sent the letter from Dee Dee to Mandark that was signed "From Dee Dee" that it said "I'll meet... I'll be in Dexter's lab, and... I will... I will... kiss you when I get there."
(The letter is shown from Dexter's POV; it then cuts to him writing the letter out, thinking about what to add, then has an idea and finishes the letter)
(At a pneumatic tube, Dexter puts the letter inside a capsule and places it inside the tube; after he presses the blue button, the capsule flies into the tube and lands in Mandark's laboratory; Mandark walks toward the capsule and takes out the letter; as he opens it, hearts fly out of the letter and Mandark hugs it whilst having a lovestruck look on his face as he falls to the floor; the mail truck drives to the left and it cuts to Dee Dee in her room reading the "letter" she received from Mandark; pink hearts fly out of the letter and Dee Dee throws it in the trash as she walks away with a disinterested look on her face)
(Back in Dexter's lab, he and Computress watch Mandark from a monitor as he runs to Dexter's house to get his kiss from Dee Dee; they rub their hands in anticipation and head over to the shrink ray and prepare for Mandark; suddenly, Mandark enters the lab still thinking about getting a kiss from Dee Dee, but instead, he kisses the shrink ray nozzle; both Dexter and Computress pull the lever on the shrink ray; on a small screen, the word "SHRINK" in red letters starts blinking)
Tyler: And then they shrunk... And then they shrunk Mandark's head...
(Mandark runs from the shrink ray, but its beam hits him directly in his head; as a result, Mandark's head starts shrinking; he looks at his hands, which are now bigger than him and he runs around the lab screaming; Dexter and Computress look at Mandark, then they fall out laughing; while doing so, Computress bumps the lever with his rear and turns on the "GROW" [shown in green letters and blinking] function; the ray fires another beam at Mandark's head; Mandark sees the beam coming and runs to hide behind a server; instead of going in front, the beam strikes Mandark's head as he is behind the server; suddenly, Mandark's head starts growing to immense proportions)
Tyler: Instead of shrunk... shrinking it, it... they grew it!
(As Mandark's head grows, Dexter and Computress look on in horror, then they scream and run to hide; Mandark's head breaks the ceiling of the laboratory, then the house's room, and it grows out of the planet; it then cuts to Mandark's head being significantly larger than Earth itself)
Tyler: And... and it was... on top of the world... it was bigger than the world.
(As Tyler continues, Mandark's head suddenly shrinks in size, although it continues to be bigger than Earth)
Tyler: Actually, it was as big as the world, and the world sucked into...
(The Earth deflates like a balloon and explodes; suddenly, Mandark's head appears in its stead)
Tyler: ...and the world was shaped like... Mandark's head!
(Tyler's mother, Gail E. Hiller Lee, appears in the bottom right corner laughing; it then cuts to a black background, as several words fly around while Tyler himself is heard stammering)
Tyler: And... An...eeah? And... And...
(Cut to Dexter's lab; Computress has his hand on the lever)
Tyler: Computress made the shrinking ray and he accidentally put it on grow.
(As he yawns, he leans back and pushes the lever, activating the "Grow" function; the beam itself flies out of the window and hits Mandark's head, enlarging it once more; back in the lab, Dexter runs toward Computress and starts scolding him)
Tyler: And Dexter said "You are stupid! Because you made the shrinking ray be on grow!" And then Dexter said "You are stupid! You are stupid! And don't forget, you are stupid!"
(Gail slides in from the bottom right corner for a brief moment then slides back out; Dexter and Computress look at her as she does so)
Gail: Do Mandark's voice.
Tyler: And then Mandark said; "Ah-haha! Now I rule the world! Ha-haha! Once I tried to get the top secret plans and I said Aha! The...These are the top secret plans! Ha! Ha-haha! Ha! And now, I rule the world Ha-haha! Ha, ha! ... Ha."
(Mandark's face leans in from the right and he laughs; Dexter and Computress both run away screaming)
(In Mandark's lab, a book with "Secret" written on the cover appears and is glowing; Mandark runs in from the left and reaches for the book; he shows it off, laughs some more, and is then shown standing on top of the world while holding the book in his left hand; he then jumps on the world for a few moments)
Tyler: And then Dexter said...
(Dexter slides in from the left and stops next to Mandark's ear; he again looks confused as Tyler trails off and slides back to the left)
(Back in Dexter's lab; Computress hits the lever with his rear, making Mandark's head grow once more; suddenly, Mandark's head explodes)
Tyler: And then Computress put it accidentally on grow again, and then Mandark's head grew more. Actually, it's... it was so big, it couldn't fit in the universe, and then his head exploded! And then Dexter said...
(Back in Dexter's lab; he prepares to say something, but his mouth starts undulating and his left index finger slowly leans forward)
(Back in space, several copies of Mandark's head fly out of Mandark himself and towards the Earth as it was raining)
Tyler: And when his head exploded, there were millions of Mandark's head, all over the world.
(Back on Earth, Dexter and Computress, both seen holding red umbrellas, look at the falling Mandark heads; in tune to Tyler's voice, Dexter scolds Computress once more)
Tyler: And Dexter said "You are stupid! I didn't want a lot of Mandark's head. And that's why...
(A smiling Mandark head lands in his right hand and cuts him off; he shakes his hand and the head flies off)
Tyler: And that's why you are stupid! You are stupid! And don't forget, you are stupid!
(Computress, with his head lowered, wheels away; as Dexter rants, several Mandark heads bury him)
Tyler: The end.
(A card with "THE END" written in purple is briefly shown before it fades to black)
