The episode begins with the Wattersons driving to the mall. Darwin suggests that they should stop by the pet store, to which Nicole agrees. Once there, Nicole notices Darwin looking sadly at a group of fish. Inquiring what is bothering him, Darwin only laments that he was looking at how happily the fish are swimming in the tank before walking away as the whole family gives him a sad look.
Back home, Nicole browses through Darwin's internet history to find out what is troubling him. After seeing that he has been searching for a better fish environment, she concludes that Darwin is unhappy with his current environment. However, as the family does not want Darwin to leave them, they try to make their home more suitable for a fish by eating worms and fish hooks for dinner, wearing ocean-themed outfits and listening to whale sounds. This only makes Darwin disturbed and confused.
With Darwin appearing even more unhappy than before, the family reluctantly decides to release him back to his natural habitat. Later on, the Wattersons drive to a pond and sadly release him into the water and drive away. However, Darwin pursues them to an ice cream shop where he demands to know why they are acting like this. Gumball explains that they were trying to reconnect him to his roots in order to make him feel better after seeing him looking so sad at the fishes in the pet store. Darwin then explains that he was not looking at the fishes, but at the large fish tank, and trying to guilt-trip Nicole into buying a fish tank for him. Although the family appears to be shocked by this at first, they all conclude that Darwin truly is a Watterson and all hug him.
Darwin then asks Nicole if this means he will get a new tank, to which she denies. Then Darwin attempts to guilt-trip her by lamenting on that he never knew his birth parents or what his life in the ocean would have been. Nicole then guilt-trips him back by lamenting how much the family owes him after adopting him, raising him and caring for him. Darwin then concedes and Nicole claims that no one can guilt trip like a mother, kissing Darwin on his forehead, ending the episode.
Before Gumball ejects from his seat, he is sitting next to Darwin. Then when Darwin goes upstairs, it shows he was sitting next to Anais because she looks at an empty seat, thinking Gumball was there.
When Nicole serves worms for dinner and says it is a special treat for Darwin, Richard's eyelashes are missing.
When Darwin says he is going for a walk, with the camera zoomed out, there is no electrical outlet behind him. Then when the camera zooms in, the electrical outlet is seen. Then when the camera zooms back out, it disappears again.
Gumball: No way, man. The crocodile would definitely win. It's like a torpedo made out of dinosaur.
Darwin: Yeah, but the bear would lure the crocodile into a false sense of security with his cuteness, then hug it 'til his head pops!
Anais: Guys, I don't think you fully understand the concept of a zoo. There won't be any animal fights.
Nicole: Uh, I never said we were going to the zoo.
Anais: But you said we were going to see depressed, out of shape creatures walking around in circles.
Nicole: Yep, we're going to the mall.
Darwin: Can we still check out the pet store though?
Nicole: Okay, deal. But first, we have to go to the cutthroat pit where men tear each other apart for a dime.
Richard: We're going to Wall Street?
Nicole: The discount aisle.
[Alison and Phillip fight over a discount flat screen television. Alison knocks out Phillip]
Gumball: Well, now we know I guess. Crocodile wins.
At the pet store
[Gumball walks past a real cat in a cage]
Gumball: Uh, Mom?
[Gumball points it out to Nicole]
Nicole: I know, sweetie. Don't think about it too much.
Richard: [Talking to a parrot] Alright, you strike a hard bargain but you got yourself a deal. Three pieces of bait for a cracker.
Larry: It can't understand you, sir. It just repeats anything it regularly overhears.
Parrot: [Squawks] Oh man! Not that chubby pink guy again!
Larry: [Chuckles nervously] Tha-that could be anyone.
Parrot: [Squawks] With his buck tooth and his stupid clip-on tie!
Larry: Uh, that could still be someone else.
Parrot: The man I'm talking about is Richard Butt-Ugly Watterson.
Richard: [Gasps, then laughs] I thought he was talking about me for a second, but my middle name isn't "Butt-Ugly." It's "Buckley." I feel sorry for that other fellow.
[Darwin looks at a fish tank full of fish, feeling sad]
Darwin: [Inhales, then sighs]
[Nicole and Anais walk up to Darwin on the right, then Richard and Gumball walk up on the left]
Nicole: Are you okay, sweetheart?
Darwin: Oh, I'm fine, Mrs. Mom. It's just, I was looking at all these fish swimming happily in this large tank. And...I've said too much.
[Gumball, Anais, Nicole and Richard gasp, then moan while looking sad]
Checking Darwin's computer
[Nicole types on the computer in Gumball and Darwin's room]
Nicole: Let me know if he's coming. Okay, how to grow a butt? What age will I start laying fish eggs? Here, a better fish environment. I knew it!
Gumball: What are you looking at?
Nicole: Darwin's browser history. Dah, what?
[Anais, Richard and Gumball destroy their devices outside]
Gumball: Sorry, we had no idea you were techie enough to check out internet browser histories. Please, go on.
Nicole: [Starts to cry] I don't think Darwin's happy here anymore. He misses his natural environment.
Gumball: Wait, you mean [Camera zooms in to his face] we're gonna release him back into the wild?
[Anais, Richard and Nicole let out a primal scream]
Nicole: [Begins to destroy the computer] I will destroy anyone who tries to take my baby!
[Gumball turns around and looks at Richard, who is literally tearing himself apart]
[Darwin is downstairs watching TV. Disturbed by the noise they're causing upstairs, he turns up the volume on the TV]
Gumball: [Talking over the sounds of their loud screams] Okay, sorry sorry! It just seemed like the rational solution.
Anais: You want rational?! [Begins to repeatedly punch Gumball]
Gumball: Ow ow ow! Okay okay okay okay okay. It's not what I want from either. Let's just try some irrational solutions first.
[Anais, Richard and Nicole instantly calm down]
Nicole: I'm listening.
Gumball: Well, if we can't take him back to his world, let's bring his world to him.
[Darwin looks excited about dinner, Nicole then scoops worms onto a plate in front of Darwin, making Darwin look confused]
Nicole: It's a special treat for my favorite little guppy. [Fills a glass with water and sets it down by Darwin]
Gumball: C'mon, dig in. Look, it's delicious. [Pretends to eat it by opening the neck of his sweater and dropping it inside, then farting it out his pants]
Richard: We got some other stuff if you don't like worms. [Puts a bowl of fishhooks in the table] How about fishhooks? Not hungry? [Grabs a handful of fishhooks and throws them in his mouth then swallows them] Mmm. Delicious! [Drinks water from the glass, then leaks out holes created in his body when he swallowed the fishhooks] I love the way saltwater stings my insides. [Passes out, slamming his face on the plate of worms in front of him, knocking over the bowl of fishhooks]
Gumball: Aren't ya hungry? Because I was about plastic bags and some mercury. [Finger quotes]You guys love that right?
Darwin: What do you mean [Finger quotes]you guys?
Gumball: [Begins to stutter, then imitates a gun cocking]
Darwin: What's that?
Gumball: The ejector seat. [Pretends to press a button, then literally ejects from his seat]
Anais: Uh, let's move straight to dessert.
Richard: [Puts his foot on the table] Here! You can nibble the dead skin off my foot.
Richard: What? [Removes his foot from the table] That's what fish do. I've seen it. In the mall!
[Darwin slams the door]
[Richard does the same sad look and moan from earlier while looking at Nicole, Nicole does the same, but she looks at Anais, then Anais does it to Gumball through the window]
Ocean Themed Outfits
Gumball: Right. According to this book, "Connecting with your roots," step one is to provide the appropriate amount of sunlight for your loved one. Which means they shouldn't be kept in your bedroom. So that's why I threw Darwin out last night.
Anais: I'm pretty sure that book's about plants.
Gumball: Uh, that makes sense 'cause part two is "Cover with fertilizer."
[Darwin's head is buried underground, and he's struggling to get out]
Gumball: Anyway, uh, step three is to dress appropriately. So, what kind of fish wear have we got going on?
[Anais, Richard and Nicole are suddenly in ocean themed outfits]
Gumball: Mom, what's that?
Nicole: [Pops out of the treasure chest, releasing bubbles] Treasure chest. [Goes back into the treasure chest, then pops out again] What are you wearing?
Gumball: [Throws away the book to reveal his outfit] Mermaid outfit. Why do you ask?
Anais: Because it looks very wrong.
Gumball: You're right. Maybe we need to rethink this and take a long hard look at ourselves in the mirror.
[All four look at their outfits in the mirror]
Gumball: Nah, we're nailing this.
Darwin: [Yelling] Okay, I'm gonna take a walk. [Whispering] Away from all this craziness.
[Gumball, Anais, Nicole and Richard stall Darwin by quickly talking and running towards him]
Darwin: No! Just no. [Walks out the door]
[All four sigh, then start to get out of their outfits]
Swimming as a school
Banana Joe: It's great we're going for ice cream, Darwin. But, what's up with them?
[Gumball, Anais, Nicole and Richard are all floating behind Darwin]
Darwin: Apparently, we now swim as a school.
Banana Joe: Why?
Darwin: All I got for an answer was:
[All four begin gulping like fish]
Banana Joe: Okay.
Larry: There you go. A banana split to share.
[Gumball, Anais, Nicole and Richard eat the banana split like piranhas, leaving nothing for Darwin and Banana Joe]
Darwin: [Sighs] Right. See you later.
[Banana Joe falls apart in two pieces]
[Darwin is walking back home, while Gumball, Anais, Nicole and Richard follow, still floating]
Darwin: [Darwin turns around and looks at Gumball, Anais, Nicole and Richard] Could you please [Gets interrupted by all four rearranging when Darwin looks at them] stop that?
Gumball: So, you're not digging the whole shoal thing?
[All four sigh as Darwin continues to walk home. Darwin walks in the house, slowed down by all four "cleaning his gills"]
Darwin: [Grunting, then shakes his head] I don't like this suckerfish cleaning my gills thing either! I'll be in my bowl. [Walks upstairs, then slams the door]
Nicole: Oh, it's not working. He's even more unhappy than he was before.
Anais: I don't think we can ever act like real fish.
Richard: Yes, we can. All we have to do is to forget everything every three seconds. All we have to do is forget everything every three seconds. All we have to—
Gumball: But listen. To make him feel included, we need to keep talking to him. But we just have to use words he can understand.
Using words he can understand
Richard: Ahem. Ray there, buddy. What's going prawn?
Darwin: What? [Darwin pops out of his fishbowl]
Gumball: Minnow? You've been giving us a lot of carp about this whole fish thing and, I eel you. No trout. I'm your sole brother after all, you know what I brine?
Nicole: We don't want you to feel orcaward. We're just trying to kelp you.
Darwin: I have literally no idea what any of you are talking about.
Gumball: We just hake to sea you like this. You know what I'm salmon?
Anais: We cod do batter if you let us fry. Here's some whale sounds to make you reel at home. [Pulls out a portable stereo. Whale sounds play] Wow, it's beautiful. If only we could understand what they're saying.
Whale Caption 1: Help me!
Whale Caption 2: I have an IQ of 160
Whale Caption 3: But they make me balance a ball on my nose and throw coins into my blowhole.
Richard: [Sniffles while tears run from his eyes] Majestic.
Darwin: [Shouting] Ah, look, can you please just get out?! I've haddock up to here—I mean I've had it up to— Ah, just get out!
[All four leave]
Back at the pet store
[Darwin looks at the fish, while Gumball, Anais, Nicole and Richard stare from outside]
Darwin: [Looking sadly at the fish, then inhales, and sighs]
[Gumball, Anais, Nicole and Richard look at each other sadly while moaning]
Anais: What can we do?
Gumball: Um, I think we should keep him away from the sea and rivers and swimming pools, and just water altogether. And other fish. Also mirrors. And fish related things like chips, lip surgery, and Japan. And daylight in general so he can't see anything else I didn't think of.
Anais: Well we might as well lock him inside a box and bury him in the basement.
Richard: Yes! That's exactly what we should do!
Richard: [Begins to tear up] Ugh, do you have any solutions that won't break our hearts?
Nicole: I'm afraid we're going to have to be rational. We have to release him back into his natural habitat.
The rational solution
[Gumball, Anais, Nicole and Richard are all crying in the car while the radio is playing]
Darwin: Why is everyone crying?
Gumball: Nobody's crying.
[Nicole stops the car. The car doors open, releasing a deluge of tears. The deluge washes them up to a pond nearby]
Darwin: What are we doing here? Can't we just go home?
Nicole: Well, this is your [Voice breaking, trying to say "home"] home now.
Gumball: [Broken voice] It's okay, buddy. We can still stay in touch. Look, I got us these walkie-talkies. Let me help you move in. [Throws a walkie-talkie into the pond, electrocuting and killing all of the fish in the pond]
Gumball: Well, now you've got the whole pond to yourself.
[All four hug Darwin and start wailing]
Darwin: Guys, what is going on? Seriously!
Nicole: We will always love you.
Anais: You were always my favorite.
[All four stops wailing]
Gumball: Uh, I'm right here, you know.
Anais: Just kidding. [Nods]
[All four resume wailing]
Richard: We're doing it for you, son. If it were up to me, you'd be blindfolded and locked up in a basement.
[All four throw Darwin into the pond. Darwin screams. Darwin swims up to the surface and watches them drive away]
[Nicole, Richard, Gumball and Anais are crying in the car]
Nicole: You all saw him at the pet store. This is what he really wanted.
Darwin: [On top of the car] What do you think you're doing?! [Begins to lose his grip from the fast moving car]
Nicole: This is a big turning point in his life.
[Nicole makes a sharp turn. Darwin gets thrown off the car]
Nicole: And he'll get used to it. He just has to hold on.
[Darwin catches up on a truck. Darwin screams]
Nicole: It's a big leap for him to go back to his natural habitat.
[Darwin gets ready to jump off of the truck and back on to the car]
Nicole: But he gave us a very clear sign.
[Darwin attempts the jump, but fails when he hits a highway sign]
Nicole: He'll just have to hang on in there.
Darwin: [On another truck, talking to Pantsbully] Hey, you! Follow them!
[Pantsbully screams and jumps out the truck. The truck begins to swerve. Darwin screams]
Nicole: Life isn't always a straight path, you know. And sometimes things just come to a dead end.
[Darwin approaches a dead end. Darwin jumps from the truck while it explodes and lands on a yellow car]
Darwin: Aha! What is wrong with you?
[Banana Joe and Banana Bob scream and jump out of their car]
Nicole: Look, I know we're all upset, but how about some ice cream to cheer us all up, huh?
[Nicole drives off the highway]
Darwin: Aah! Come on!
[Nicole pulls up to an ice cream stand outside of a Joyful Burger]
Nicole: Three sundaes, please, and, Richard, honey, what do you want?
[Darwin lands face-first on the windshield]
Darwin: You abandon me, then go for ice cream?!
[All four scream then jump out of the car]
Darwin: [Shakes the grass and mud off of his face; shouting] Somebody please tell me what is going on!
Gumball: Sorry, buddy, but you were just so sad when you were looking at those fish in the pet store. We tried to reconnect you with your roots, but we could see it wasn't enough, so we kind of White Fang'd you.
Darwin: What are you guys talking about?
Nicole: You know -- the way you looked at the fish and then back at us with that sad face.
[All four make the face]
Darwin: Oh, that. I wasn't looking at the fish. I was trying to guilt-trip you into buying me the huge tank.
Nicole: You were trying to emotionally blackmail me into buying you something?
Richard: Well, looks like somebody's shown their true colors. You really are...
GumballAnaisNicole and Richard: A Watterson!
[Everyone hugs Darwin]
Darwin: [Whispering] So does this mean I get a new tank?
Nicole: [Whispering] Absolutely not.
[Darwin whines while making a sad face]
Nicole: Okay, well, if I work even more night shifts and stop eating dinner, then maybe I could save us enough money.
Darwin: I suppose that's fair. Of course, I never knew my real parents, or what my life would have been like in the ocean.
Nicole: That's true. We cruelly took you in, clothed you, fed you, looked after you... I suppose we still owe you so much.
Darwin: [Sighs] You're too good.
Nicole: No one can guilt-trip like a mother. [Kisses Darwin on the forehead]