The episode begins with Gary looking for his cat outside his house, unaware of an unknown creature that lurks near him. Just as he finds his cat, he is snatched by the creature under his car.
The next morning, the Wattersons are eating in the living room where they see a TV news report about the disappearance of local citizens. The news report shocks them but motivates Gumball and Darwin to investigate and find out who the culprit is. During the investigation, Darwin finds a mysterious egg under Gary's car, which they take to Anais for further examination. However, the brothers get bored of listening to her so they resume their search for clues. Fortunately, they find pieces of shredded clothes which lead to Gary's basement.
Meanwhile, Anais finds out that the egg comes from a "Trionyx," the same species as their Evil Turtle. Much to her horror, the egg hatches and the hatchling attacks her, alerting Gumball and Darwin who come to her rescue. Once the danger passes, Anais reveals that the Evil Turtle is actually female and has escaped while being pregnant.
After Nicole and Richard are informed of this, the family investigates Gary's basement, where Nicole sees a whole breeding ground filled with Evil Turtle's eggs as well as the missing locals. Just as Nicole gets them out, the eggs begin to hatch. The countless hatchlings spread all over Elmore, wrecking havoc everywhere they go.
Anais then finds out that the hatchlings will take over any territory they can unless they have their mother to guide them, so the only way to stop the hatchlings from destroying Elmore is to find Evil Turtle so she can lead her offsprings to the river. The family finds Evil Turtle captured in Pest Controller's van and show her to her offsprings. The plan works, Gumball says goodbye to Evil Turtle and apologizes for never understanding her. The family observes Evil Turtle swimming away with her babies in awe, with Gumball revealing that their pet was never really evil, but simply a caring parent. However, the turtles attack and sink a nearby ship, much to the family's shock and Anais speculates that maybe she was both caring and evil.
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The Night of the First Attack
[The episode starts at night, with Gary searching for his cat in front of his house]
Gary: Here, kitty, kitty, kitty.
[He starts walking on to the sidewalk; heavy breathing is heard]
Gary: Kitty? Where are you? Kitty, kiiiity, kitty?
[Startled by the heavy breathing, Gary turns around, only to notice that it was Richard watching television next door. Taking notice, Nicole tries to cover his mouth, but he continues to blow into her hand. Gary then hears another sound, believing it to be his cat]
Gary: Oh, Kitty! I can hear you under there you little rascal. Come on.
[Gary bends over to look under the car. Sensing something approaching behind him, he turns around and screams, but it turns out to be his cat after all, who meows at him]
Gary: Ah, there you are!
[The cat starts to hiss and back up from Gary]
Gary: Wait, If you're there, Then what's --
[Gary is suddenly dragged under his car violently as he tries to claw his way out]
[screams] Oh man! Oh no! Help me! Ah Oh Ahhhhh!
[The car alarm blares as Gary disappears under the car]
[The next day, the Wattersons are watching television and eating breakfast]
Gumball: Meh. I had a really weird dream last night. I asked Penny if she can marry me and she was all like, [Screaming] "Oh man! Oh no! Help me! Ah Ah Ahhhhh! Woowoowoowoowoo!" [Calmly] I took it as a yes.
News Reporter: We interrupt this cartoon with some breaking news. Elmore Police are investigating the disappearance of a number of local citizens. Who's to blame? Feral Teenagers? Foreigners? The Internet? We don't have all the evidence, but it's never too early for a verdict, so we say yes.
News Reporter: Yes!
All: [Bigger gasps; Get closer together]
News Reporter: And YES!! [Bangs his fists on the table]
All: [Even bigger gasps; Huddle together]
News Reporter: [Showing an image of a younger Gary] Here is one of the alleged victims.
Richard: Ah. It's okay. We don't know him.
News Reporter: This photo is several years old, [Wrinkles drawn on to the image of Gary's forehead] but this is what he may look like now.
All: [Gasps] It's the guy next door!
Finding Mr. Purply Antler Guy
[Outside, French Fry Cop puts up a missing poster showing Gary]
Gumball: [Gesturing dramatically at missing poster] Oh, how could this have happened to you, dear Mr...
Darwin: Guy...? I have no idea what he's called.
Gumball: Me neither.
Darwin: And to think we live right next door to him.
Gumball: We've gotta help find him.
Darwin: Yes! Because we refuse to let you go without a fight. Oh dear Mister... [Unintelligible] ... Sorry, I thought it would come. [Starts to walk away with Gumball, but quickly runs back] We might need this. [Grabs poster and runs off]
Discovering the Egg
[Gumball and Darwin begin their search walking near their house]
Gumball: You don't just disappear like that without leaving some kind of evidence. [Darwin looks through the car window] Hmm... Must be something.
[Gumball and Darwin notice the trash can rattling behind them and approach it cautiously]
[Gumball lifts the trash can up, revealing the cat to be hiding on its bottom. The cat then jumps on Gumball's head and begins scratching him, making Gumball scream and fall over. He quickly gets back up and brushes himself off, with some of his fur peeling off of his face]
Gumball: [Deadpan] And that is why I'm not a cat person.
Darwin: Uh... [Gestures at Gumball who is, quite literally, a cat person]
Darwin: Nothing. [Gumball starts to walk off; Darwin ducks under the car] Oh, wait up. Uh, you might wanna take a look at this.
[Gumball and Darwin look under the car, discovering an egg stuck to the bottom. Gumball gasps]
Gumball & Darwin: [Imitate dramatic music]
Investigating the Egg
[Anais investigates the egg in the attic with a magnifying glass]
Anais: Hmm... I'm not exactly sure, but I'm certain I've seen something in this book. It's an egg, so it's obviously not mammalian. From it's leathery surface, I'd rule out avian. Aha! Then it must be reptilian. But let's not get ahead of ourselves here; I need to study the cold-blooded facts. [Chuckles] Get it? Cold-blooded? Reptile? [Notices that Gumball and Darwin are gone, hearing the attic door slam; Sighs]
[Gumball and Darwin are back to searching outside. A trail of clothing is seen on the sidewalk in front of them]
Darwin: Didn't you wanna hear what she thought?
Gumball: Nah. She lost at "book." Let's just keep looking for clues.
Darwin: Maybe this obvious trail of shredded clothing is a clue.
Gumball: Nah. If it was, it would be more dramatic than that.
[An even more dramatic cue plays and it starts to rain. Gary's cat screeches and jumps into frame]
Gumball: [Terrified] Okay, okay, okay! It's a clue, it's a clue! [Laughs nervously; Starts following the trail of clothes around the house]
[The scene cuts to Nicole and Richard watching the news and holding each other nervously]
News Reporter: The number of mysterious disappearances continues to rise. Elmore Police have made the following statement.
Doughnut Sheriff: [Addressing the camera] We are doing everything in our power to find the missing citizen, leaving no stone unturned.
[In the distance, Hamburger Cop turns a stone over and examines it carefully. He looks back at Doughnut Sheriff and sadly shakes his head]
[The scene cuts to Gumball and Darwin, who follow the trail of clothes to a grate on the side of their house]
Darwin: Wait. So the clothes lead right back to our own house?
[Gumball and Darwin lift up the grate]
Gumball: This could only mean one thing.
Darwin: Whoever's in there is naked.
Both: [Giggling; Hearing thunder, they flinch]
Trouble in the Attic
[Anais is looking through her book in the attic]
Anais: Okay, reptiles. It's gotta be in here somewhere. Snake? No. Crocodile? No. Banker? No. Oh, what could it be?
[The egg starts to crack in the foreground. A small turtle crawls out, unbeknownst to Anais]
Anais: [Gasps] The Trionyx. "An aggressive predator from the Nile River." Hey, that's the same as our turtle. "Eggs will only hatch in a warm environment."
[Anais turns around and gasps, seeing the hatched egg. Breathing heavily, she starts to back out of the room. She notices what she believes to be bat and readies herself to attack the turtle, but it turns out to be a feather duster. The turtle approaches her from behind and scratches the back of her leg, causing her to scream]
Gumball & Darwin: [Hearing Anais' screams] Anais!
[They dart over to the attic, where they find Anais struggling to hold back the turtle, which is snapping close to her face]
Gumball: Hold On! [Grabs a tennis racket; Gruff voice] Hey, you, say hello to my little friend... Darwin. [Pushes Darwin into frame, giving him the tennis racket]
[The turtle tries to bite Darwin, making him scream and fall over]
Anais: [Yelling] Gumball, distract it!
[Nervously, Gumball starts dancing to rouse the turtle's attention. With it distracted, Anais runs up to it with her book and smacks it out of the roof]
Gumball: What was that thing?
Anais: That was our Evil Turtle's baby.
Gumball & Darwin:[Gasps]
Anais: Which means our evil turtle was a girl.
Gumball & Darwin:[Gasps]
Anais: And she wasn't really evil.
Gumball & Darwin:[Gasps]
Anais: She was just pregnant.
Gumball & Darwin:[Gasps]
Anais: And I think she-
Gumball: [Short of breath] Wait. One more shocking revelation and we might explode.
Gumball & Darwin: [Exhale]
Gumball: Please continue.
Anais: She must have escaped.
[Gumball and Darwin suddenly explode]
A Little Problem
[Gumball, Darwin, and Anais are in the kitchen looking at Evil Turtle's tank]
Gumball: But how? We blocked the top of the tank.
Anais: She must've chewed her way down.
Gumball: [Moves the books, revealing a hole going down the cupboard] I think we have a little problem.
Anais: I think it's a big one. It says in this book it'll grow according to how much food is available. So imagine what she could become in an American suburb?
Gumball & Darwin: [Scared] Supersized.
[The scene changes to Nicole and Richard still watching the news]
Newscaster: Breaking news. The monster has been caught...
Nicole & Richard: [Sighs]
Newscaster: On camera eating an old man walking his dog.
[They both get scared again; Anais, Darwin, and Gumball comfront them, rambling incoherently]
Richard: Shh! Kids please.
[On the television, Marvin is shown being eaten by the evil turtle. Marvin screams and the camera gets up closer to him]
Reporter: Elmore News, do you have any comment?
Nicole: Oh my gosh.
Richard: I know... [Excited] Our turtle is famous!
[Everyone glares at Richard, making him frown]
Newscaster: Unfortunately for our sponsors, the turtle's now been captured by Elmore Pest Control.
[Footage shows Evil Turtle being locked in a cage and shut in the Elmore Pest Control van as she hisses at the camera]
Nicole: How has this happened?
Anais: She escaped to make a nest to lay her eggs. She must have been pregnant when Dad bought her.
Richard: Who's to say that this pregnant turtle is a her?
[Everyone stares at Richard uncomfortably]
Nicole: We need to find that nest.
Newscaster: The only traces of the victims are shredded pieces of their clothing.
Gumball & Darwin: [Imitate dramatic music]
Finding The Nest
[Back outside, Nicole is crouching through the vent at the back of their house with a flashlight, looking for the nest. She suddenly gasps]
Gumball: What do you see?
[The camera zooms out, revealing the grate to be filled with turtle eggs, slime, and trapped victims]
Nicole: Ahh! [Nicole screams as she just notices Gary right beside her, trapped in slime]
Gary: [Faintly] The light, the light!
Nicole: No! don't go into the light! Stay with us, stay with us!
Gary: No! I mean the flashlight, you're shining it in my eyes.
Nicole: Oh, sorry. [puts flashlight down] Why did the turtle bring you here?
Gary: For food.
[The eggs starts to hatch. The trapped residents scream]