The episode begins with the Wattersons complaining about their day being the worst day ever. Nicole asks Richard to make dinner since she is too angry to make anything, and this causes everyone else to ask each other to make dinner. Richard then gets an idea that they should have "a balanced meal with meat and vegetables" with "tomatoes, and ham served on a bread base for a slow release of energy with melted cheese on top because dairy products are good for growing children's bone structure." He also says "it should minimize dish washing, and be round in shape negating any sharp edges to avoid oral injuries." The others take this as pizza, which makes Richard sad (since he thought he had just created a new kind of food which he was going to call "the circular half-sandwich with stuff on it").
Nicole attempts to order pizza, but she breaks the phone from still being too angry. So Richard instead orders from Fervidus Pizza for them. He then speaks with Larry, and gives him specifications for the pizza (a family sized pizza with one-fifth margherita, one-fifth vegetarian, one-fifth surf, one-fifth turf, and one-fifth mega meat with none of the fifths being cooked in the same oven, but required to be at an identical temperature on delivery). Then Richard also asks for a toy, and gets angry when Larry says they don't do toys (Larry eventually agrees to get a toy). Larry says he'll be there in 45 minutes, but Richard's stomach growl which makes Richard ask for the pizza to be delivered in 15 minutes. Then he is asked for a tip in compensation for the half-hour long call. Being given the choice, Richard readily says no. Then the family starts waiting for their pizza.
The Wattersons get bored while waiting, and Nicole tries to distract them by watching TV. But in the news, a pie chart appears which makes Richard become even hungrier, and this makes Nicole turn it off. Then she gets the idea to tell why they had such a bad day. Nicole tell them that her bad day all started when her car broke down on the way to work. Larry (the repairman), inspects her car, and charges her with 100 dollars to fix a superficial damage. But Nicole gets enraged, and breaks one of the headlights. Larry charges her with 200 to fix the new damage, and Nicole screams and breaks the windows. After being charged with 500, Nicole unintentionally causes her car to break down and collapse. With the total coming to 750, Nicole (even though knowing that Larry is just doing his job) rages at Larry. When Larry asks for a tip, Nicole rages at him again. Then she ends her story, her head was still big from the story she told, and deflates her head back to normal. Despite this, Gumball is still hungry for the pizza, and starts to digest himself.
Outside, things begin to go wrong. The Doughnut Sheriff's car is on fire while there is an explosion in the distance. The Wattersons, bored and hungry, do not notice this. Eventually Richard gets the family to ask him about his bad day, and he tells them. His bad day started at the burger joint when Larry refused to serve him food because he had ingested 12,000 calories an hour before. Richard says he exercised, but Larry reveals that he just saw him walk out, stare at his watch, then walk back in. Richard leaves, and then suddenly jumps on the counter and drinks lots of shake and eats the condiments. Larry tries to stop him, but in the end he just asks Richard to pay for all he consumed (which Richard does). After being asked for a tip, Richard responds by blowing straw wrappers at Larry's face and running away. After his story, Gumball starts hallucinating and sees Darwin as a sausage. Darwin also starts hallucinating, but he is so hungry he sees Gumball as a handbag instead, Anais as a cupcake, Nicole as an ice cream, and Richard as a burger.
Out of the house, signs of chaos are starting to show (with Tobias running away from Frank and Bean on bikes). Gumball decides to tell his parents why he, Darwin and Anais had a bad day. They were in the video store, waiting in line to rent a DVD. But as they waited, they unintentionally spoiled all the plots of the movies the customers in line were planning to see, making them leave. Larry pleads to them to stop ruining his business, but they say that there's no one there. Anais remarks that no one rents DVDs anymore, and after Larry asks why they're there Gumball says he's supporting his favorite store. Larry asks for a tip, and Gumball mistakes this as being offered money. Larry then screams at them after Gumball takes some money from the tip jar. Once again, they declare the day as the worst day ever.
But suddenly Anais realizes that someone else had a worse day then them. After her family insists that they had the worse day than all of each other and get confused to who else could have had a worse day, Anais tells them that Larry's day was far worse than theirs since he's done his jobs without getting any respect from them. When the family doesn't recognize Larry well, she dials Fervidus Pizza. A message of a miserable Larry tells them that he has quit all his jobs, and that he is leaving Elmore. Anais says that the situation is grim since the town doesn't function without Larry. After Gumball draws the curtain and sees exploding cars, burning streets and chaos the family agrees to find Larry and apologize to him.
With their car breaking down (and its parts being stolen by unruly citizens), the family runs through the streets. They encounter Sal Left Thumb, and a corrupt Doughnut Sheriff. They try to convince them to stop, but Sal is taken down by the sheriff, and the sheriff reveals that he has not been paid and thus he doesn't care. The family then takes cover from a swarm of locusts and finds a seemingly unconscious Principal Brown. Principal Brown then reveals himself to have been twisted by the chaos, and he with other twisted citizens corner the Wattersons in what they claim is their territory. Mr. Small tells the family that they plan on eating them and apologizes since it's the survival of the fittest.
Reacting to the latter's last remarks, Nicole singlehandedly takes out all of her family's attackers. Afterwards the Watterons cheer in victory and dress up in "apocalyptic" outfits. They soon find a sad Larry. Larry asks them what they're doing there, and why they're dressed like that. Gumball responds "Because it's the apocalypse." The Wattersons tell Larry that society has broken down when he left (even though it was only 20 minutes ago). They say it took that long for them to see how precious he is and they apologize to him by giving him a hundred dollar tip. Larry thanks them (even though Gumball tells him that because of the inflation caused by no business, the tip is almost worthless). After thanking them, he charges them with 9000 dollars for the pizza they ordered. Nicole writes him a roadkill check, and Richard pays him with rats. Then the episode ends.
[The episode starts with the whole Wattersons family going inside their house. They are complaining noisily]
All: Worst day ever!
[Then they sit on the couch. Its legs break due to their combined weight. They all grunt angrily]
Nicole: Richard, it's your turn to make dinner! The only thing I feel like serving up today is a knuckle sandwich!
Richard: Gumball, it's your turn to make dinner!
Richard: Because I'm too angry to think of a valid excuse!
Gumball: Darwin, make dinner!
Darwin: Why me?
Gumball: Because- [Hisses like an alien monster, showing his teeth and fangs]
Anais: [Slaps Darwin]
Richard: Look. We've all had a difficult day. What we need is a balanced meal with meat and vegetables. I'm thinking tomatoes, and ham served on a bread base for a slow release of energy with melted cheese on top because dairy products are good for growing children's bone structure. It should minimize dish washing, and be round in shape negating any sharp edges to avoid oral injuries.
Gumball, Darwin, Nicole and Anais: Oh yeah. Pizza.
Richard: Dagnabbit, I thought I just invented a new food. I was gonna call it "The circular half-sandwich with stuff on it." [Sigh] I guess my greatest invention will remain the potato sticks fried in oil.
Nicole: [Walks over to phone] Okay then, we'll get pizza delivered. [Literally punches in numbers angrily]
Anais: I think you're still a little bit intense, mom. You shouldn't touch anything for a while and let dad do it.
Richard: Okay, have you got it?
Larry: Yes. We have a family sized pizza with one-fifth margherita, one-fifth vegetarian, one-fifth surf, one-fifth turf, and one-fifth mega meat. None of the fifths can be cooked in the same oven, but must be an identical temperature on delivery.
Richard: And a toy.
Larry: I'm sorry sir. We don't do toys.
Richard: AND A TOY.
Larry: I guess I can run by the toy store. Your pizza will be there in forty-five minutes.
'Richard: [Stomach growls] I don't have forty-five minutes! Faster!
Larry: Fine. If I skip my break, I can be there in half an hour.
Richard: [Stomach growls]
Larry: FINE. If I run the red lights, I can be there in fifteen minutes!
Richard: [Stomach growls approvingly] That is acceptable.
Larry: That'll be $9.99, and would you look to add a tip?
Richard: Nnnn-I don't know. Does it taste good?
Larry: No sir. I mean do you want to pay a good utility, for service and in compensation for the half-hour long order you just made?
Richard: Do I have a choice?
Larry: Always sir!
Richard: Great! Then no! [Hangs up phone] We're getting a pizza, and I saved us money! This day just got as twice as good!
Waiting for the Order
[Outside, the Doughnut Sheriff drives into the Watterson's trashcans. Then he drives away. The family inside the house continues to wait. They are bored]
Gumball: Ugh! This is taking forever.
Nicole: Be patient boys. It's only been sixteen minutes. Let's take our minds of it. [Switches on TV]
[The news is on]
Newscaster (on TV): Good evening. Our biggest story tonight is of course the sudden spike in random aggression in Elmore. To illustrate the situation, here's a pie chart. [Points to pie chart]
Richard: [Stomach growls] Turn it off! Pie charts make me hungry!
Nicole: [Switches off TV] Why don't we all tell each other about our day, and why we got upset in the first place. I'll go first. I was on my way to work-
[Transitions into a flashback. Nicole's car is being checked by a repairman by the side of the road. The repairman is revealed to be Larry]
Nicole: When the car broke down.
Larry: Well, the damage is only superficial. [Closes car hood] So it shouldn't cost more than $100.
Nicole: $100? [Breaks headlight] EXCUSE ME!?
Larry: Better make that 200.
Nicole: WHAT? [Breaks windows]
Larry: Uh, 500?
Nicole: WHAT?[Whole car falls apart]
Larry: [Yelps][Whispers] 750?
Nicole: Before I do what I'm about to do, I want you to know this is not your fault. You're just doing your job, but someone has to suffer for what happened and unfortunately you're the only one around. [Inhales deeply]
[Her head grows big, and she becomes very, very furious]
Nicole: YOU ARE A WORM! YOU'RE A THIEVING, BOTTOM-FEEDING, MONEY-GRABBING CROOK! PEOPLE LIKE YOU ARE SQUEEZING THE VERY LAST CENT OUT OF HARD-WORKING FAMILIES! YOU'RE THE REASON ICE CAPS ARE MELTING AND BABY POLAR BEARS ARE HOMELESS! [Returns to normal][Sighs in relief] I think that's all there was. Here. [Hands Larry the money]
Larry: Uh. Would you like to add a tip?
Nicole: Sure, a little extra twelve percent? [Inhales deeply]
[Her head grows big, and she becomes furious again. She continues shouting]
Nicole: YOU'RE A WORTHLESS MAGGOT, A POINTLESS LITTLE--
Nicole: Anyway, I feel much better now.
[She sees her family pushing away her head with a table (which has become large)]
Nicole: Oh. Sorry. A little too much in the moment there. [Head shrinks to normal]
Gumball: [Groans] Where's the pizza! I'm so hungry I'm beginning to digest myself.
[There's a hole in his stomach that pulls his body and head into it]
[Outside, the Doughnut Sheriff's car is on fire but continues to move on its own. They continue to wait in boredom and hunger. Richard sighs, and looks at his family. He repeatedly sighs]
Nicole: Alright, fine! Richard, how was your day?
Richard: I don't want to talk about it!
Nicole: Richard, you obviously want the attention.
Richard: Fine, if you all insist.
[He waits for them]
Richard: …Come on. Insist!
Gumball: Ugh just tell the story already!
Richard: Alright. So, I was in the burger joint-
[Transitions into him in a flashback at the front of a line ordering]
Richard: Five double cheeseburgers, and three cookies and cream shakes.
Larry: Sir, please! You just ingested 12,000 calories an hour ago! To burn that off, you would literally have to catch fire. I can't in good conscience serve you another meal before you exercise!
Richard: But I did exercise.
Larry: [Whispers] Sir, I saw you. You just walked outside, stared at your watch for an hour, and walked straight back in.
[Richard sighs, and walks away. Suddenly he jumps into the counter, and drinks a shake directly from the dispenser]
Larry: Sir, stop that!
Richard: [Grabs and eats ketchup and mustard]
Larry: Sir, you need to leave! You've had enough!
Richard: I'll tell you when I've had enough! [Continues consuming condiments]
Larry: Sir! I'm gonna have to ask you to pay for that!
Richard: [Throws money at Larry]
Larry: Huh. I'm sorry, but it's company policy to ask. Would you like to add a tip?
[Richard stops eating and walks over. He takes all the straws, rips off part of their wrappers, and blows the remaining wrappers at Larry. Then he runs away]
Darwin: Well, the customer is always right. So even though you were very clearly in the wrong, you were in the right.
Gumball: Ugh! WHERE'S THE PIZZA!?
[He looks at Darwin, and sees him as a sausage]
Gumball: I'm so hungry I'm starting to hallucinate.
[Darwin shakes his head, and sees Gumball as a handbag]
Darwin: I'm so hungry I can't even hallucinate right.
[Nicole (as an ice cream), Richard (as a hamburger), Gumball (as a handbag), Darwin (still as a sausage), and Anais (as a cupcake) all sigh]
And Still Waiting
[Tobias runs and screams as he is chased by biker gangs. There is fire, and an explosion behind the Watterson's house. The family still waits, unaware of the situation in the outside world. Then the lights fluctuate]
Gumball: Well. Since the pizza still hasn't arrived, I might as well tell you why we're in such a bad mood. So, earlier on we went to the video store…
[Flashback. Gumball, Darwin and Anais wait in a line at Laser Video]
Gumball: Exactly what I'm saying dude! These days, the trailers show you the whole thing, apart from the end credits.
Darwin: Yeah! What's the point of watching the whole movie when you already know what happens in it? It's like going up to this guy [Gestures to Dr. Butt] and saying "Oh, you know that movie about the wizard kid under the stairs? Well, at the end the bearded dude gets iced by the goth guy.
Dr. Butt: [Farts in anger]
Anais: Or like that one with the asthmatic robot who turns out to be the laser samurai's dad.
Sussie's Mom: [Rips off hair, and screams][Walks away]
Gumball: Yeah! Or at the end of the planet in the monkeys when we realize that it was Earth all along.
Neck Beard: [Drops down on knees] You maniacs! GOSHDARN YOU!
[He tries to get up, but is stuck. He rolls away]
Larry: Guys, please! You're killing my business here.
[Gumball, Darwin and Anais look behind them and notice that everyone is gone]
Gumball: Dude, there's no one here.
Anais: You need to rethink your financial motto. No one rents DVDs anymore.
Larry: Then what are you doing here?
Gumball: [Hands payment] Supporting my favorite store!
Larry: Well, how 'bout a tip?
Gumball: [Takes money from the tip jar] Well, sure. Thank you. Hey look, a Twenty.
Larry: GET OUTTA HEEE-
Gumball: What kind of store bans its own customers?
All: [Sigh] Worst day EVER!
Anais: …Wait. Do you know who really had the worst day ever?
Richard, Gumball, Darwin and Nicole: Me!
Anais: No, guys. Who really suffered all day?
Richard, Gumball, Darwin and Nicole: Me.
Anais: No! Who always puts up with us without ever getting any respect or gratitude?
Richard, Gumball, Darwin and Nicole: Oh. Me!
Anais: NO! Who's the person who's probably spitting in our pizza because of how we've all treated him?
Richard, Gumball, Darwin and Nicole: …you?
Anais: NO! LARRY! It's Larry, guys.
Richard, Gumball, Darwin and Nicole: [Mumbles about not knowing who Larry is]
Anais: The guy that does every job in this town.
Gumball: Ohhh. Barry!
Nicole: I always thought he was called "Harry."
Richard: Wait. Mary is a man?
Anais: [Sighs and facepalm] I think this man deserves an apology. [Dials pizza phone number]
Larry (through phone): Welcome to Fervidus Pizza. Unfortunately we cannot take your call right now, because…[Angry] Er-because I can't take it anymore! I have only one thing left to say to you, Elmore! [Normal] Try our family deals for five dollars, ninety-nine. [Despairing] Goodbye Elmore! I quit. [Hang up phone]
[The phone dies, and so does the electricity. A siren is heard. It turns out to be Richard wailing]
Richard: We're never gonna get our pizza!
Anais: No, this is really bad! This town doesn't function without Larry.
Gumball: Let's not panic. How bad can things get in fifteen minutes?
[He draws the curtains covering a window, and reveals a scene of total chaos, anarchy and the apocalypse of Elmore. People scream and Gary runs from cube dogs as cars bump into each other, and explode. A tiger jumps onto a vulnerable Marvin. At once, Gumball covers the window]
Gumball: Okay, I think we'd better apologize to Larry.
[The family starts their car, but fails]
Nicole: Someone's siphoned down all of our gas!
Gumball: I think they took a little more than that.
[Their car breaks down. Citizens steal the remains of the car in a flash]
Gumball: Well, I-I guess we'll just have to…um…
[Richard pretends to start up a car, and they all move with him. They run across the wreckage of the town]
Gumball: How can things get this bad?
Anais: This is what happens when Larry's on strike!
[Sal Left Thumb steals a television. He stops as Gumball talks to him]
Gumball: Wait! Think for a second. Stealing TVs in the middle of the apocalypse? Can't you see how wrong and stupid this is?
Sal Left Thumb: Yeah, you're right! There's no TV signal! [Steals more equipment] Thanks kid.
[He runs off only to be tackled by the Doughnut Sheriff. The family cheers for him]
Doughnut Sheriff: [Cuffs Sal] I'll have that [Grabs TV] Thank you very much.
Anais: What! Aren't you supposed to fight crime?
Doughnut Sheriff: Larry also worked as the police force accountant. I haven't been paid, so goshdarn you all!
[He gets in his car, and drives off only to crash into the window of a store. He then throws an object at the remains of the window, and gets inside. Richard begins grabbing things]
Gumball: Dad, what're you doing?
Richard: I'm getting provisions for our life in the broken world. You'll thank me when you're sleeping in your comfy canoe. [Grabs a canoe and a mattress]
Anais: Can't we just sleep on the mattress?
Richard: No way! That's our emergency raft in case the town floods.
Anais: Oh come on! We don't have time for this. We have to find Larry before things get worse.
Darwin: How can they get any worse?
Gumball: How about a plague of locusts?
Darwin: A whaaaa?
Gumball: [Panicking] Locusts!
[The family runs away, and takes cover as a swarm of locusts fly by them]
Anais: This is turning apocalyptic!
Darwin: No. It's just that Larry was in charge of pest control. [Notices something] Guys, it's Principal Brown! I think he might be hurt!
[Brown is lying facedown on the ground. Darwin walks to him]
Darwin: Principal Brown? Are you alive?
[He doesn't move, but amongst the wreckage there is movement]
Darwin: Principal Brown?
Gumball: No Darwin! It's an ambush!
[Principal Brown gets up, and scares Darwin. He has markings on his face, and goggles in place of glasses]
Nigel Brown: I am no longer Principal Brown. I am the eagle of the rooooost!
[Several citizens (severely twisted and changed by the chaos) emerge from the wreckage around]
Gumball: AH! What do you want!
[The twisted citizens advance slowly to the family, but are stopped by Mr. Small's megaphone. He stands atop a heap of wreckage]
Mister Small: This is our territory, and you are now our prey.
Gumball: What? Are you planning to eat us?
[Mr. Small jumps down, and approaches them]
Mister Small: Yes, I ran out of tofu and soy milk. So you guys aren't on any antibiotics, are you? If I have to eat meat, I want it to be organic.
Gumball: Are you serious!?
Mister Small: I'm sorry. But it's survival of the fittest.
Nicole: Good. Then you won't mind me doing this.
[She grabs Mr. Small, and flings him on some of the others. Then she grabs Leslie, bites off a petal and uses his pot like a mace. She takes out Carmen's dad. Nicole howls, and throws Leslie down. She punches Principal Brown and sends him flying]
[Alan backs away, and pops in fear]
[In one portion of Elmore, Larry sadly looks down at his empty tip jar and breathes heavily. Then the Wattersons come to him. They are dressed as if it was the apocalypse]
Larry: Why are you guys here? And why are you dressed like that?
Gumball: Because, it's the apocalypse and because…well, it-it's the apocalypse.
Anais: Society collapsed as soon as you resigned.
Larry: But that was only twenty minutes ago.
[In the distance, a large explosion followed by a mushroom cloud occurs]
Gumball: Yeah, and that's all the time it took for us to realize our mistake. We needed to be reminded of how precious you are. So this is for you, Gary.
[He puts one-hundred dollars into Larry's tip jar]
Larry: A hundred-dollar bill? Thank you.
Gumball: Yeah. Don't get too excited. Without you, there is no business and since nothing was being bought, which ruined the economy and forced up inflation, this one-hundred dollar bill can probably just about get you a rat burger, or a kick in the teeth.
Larry: Still, it came from the heart. But in that case, this pizza now costs nine-thousand dollars.
Nicole: Do you mind if I write you a roadkill cheque?
Larry: Sure! We now also accept payment in uranium, antibiotics, and melee weapons.
Nicole: [Hands over a cheque]
Richard: And here's your tip.
[He hands over some rats which scares Larry. Then the episode ends]