We begin this adventure in another apartment complex that isn't the (original) Tiny Toons apartment. In one of the rooms is the room of the two authors: RedHood123 and DiamondPickle994. They were getting ready to write a story together.
"And then Yaya could say "Well, ravioli-ravioli, give me the formul-wolli" after Morgana presents the pizza." Suggested RedHood123.
"Good idea." DiamondPickle994 replied.
On their radio, the song "Canned Heat" by Jamiroquai started playing, prompting RedHood123 to turn the room into a disco with disco ball and a dance floor. The room turned neon when the chorus started.
"This feels like a party!" Exclaimed DiamondPickle994.
Suddenly, the two authors heard a loud squeal of joy which shattered their windows. The squeal sounded like (Original) Fifi La Fume. They looked out and saw a bunch of Show Town residents running in fear. Among them were Ash Ketchum, Pikachu, Meowth (who hasn't been noticed by Ash nor Pikachu yet), Peacemaker, Omni-Man, the Star Wars bounty hunters, and much to their surprise, Homelander.
"What's going on?" Asked RedHood123.
The happened to glance at a nearby mountain. On that mountain was Evil Steve, who was grinning evily while preparing something.
Fifi La Fume was at the doctor's office with her husband. She was feeling unwell the last few days so they went to the doctor to find out why.
"Hmmm." Said the Doctor, after Skunky and Fifi told the doctor the problems. "I think I might know what causes these, but Fifi here will need to take a certain test."
"Ees eet a 'ard test?" Asked Fifi.
"Not really." The Doctor replied. "It'll be quick."
After Fifi took the "test", the Doctor came into the room and delivered the results.
"It came back positive!" The Doctor exclaimed. "Congratulations, Mr and Mrs La Fume! You're going to be parents!"
Neither Skunky nor Fifi said anything at first. They were both utterly surprised. The first one to speak was Fifi. But it was less of speaking, and more of squealing with utter joy and happiness. She squealed so loud, it shattered everything made of glass and echoed throughout Show Town like a sonic boom.
"This is incredible!" Skunky exclaimed. "We are going to make a great mom and dad!"
"OUI!" Fifi happily cried. "ZHIS EES ZHE BEST NEWS I 'AVE EVER 'AD!"
"Please calm down." Requested the Doctor. "You might scare some of the other patients."
"Oops." Fifi giggled, sheepishly. "Désolée."
Among the people who heard Fifi's squeal was the newcomers, whose boat just arrived at the Show Town. The newcomers were some of the characters from the "Ugly Duckling" movies from "Neptuno Films". The "Ugly Duckling" title character named Ugly (yes, that's what he's called. Look for the movies if you don't believe me.) There was Nico the pig, Ugly's best friend. There was Patty, Ugly's girlfriend. There was Ugly's bully/rival, Apollo, and his lackey, Flope the Flamingo. There was also Weasel Boss and his lackey, Sneaky. And last but not least was Mariano the rooster.
"This must be Show Town." Said Ugly, reading the "Welcome to Show Town" sign.
"Well obviously it is!" Snorted Apollo. "Can't you read?"
"Stop it, Apollo!" Demanded Patty. "We're new here, so we should make a good impression!"
"Uhh, did I just hear an explosion?" Asked Weasel Boss.
They turned and noticed an explosion in the distance, and the fumes from the explosion morphing into a portal, which various villains came out from.
"Well this can't be good." Commented Mariano.
"We need to find someone and warn them!" Exclaimed Nico.
They rushed into Show Town to find someone to warn. Eventually, they came across Deadpool.
"Hey, what's the rush?" He asked. "Oh wait, you saw villains coming out of a portal, didn't you?"
"How did you know that?" Asked Sneaky.
"Don't worry about it." Deadpool replied. "Me and my friends are going to host an emergency meeting with everyone in Show Town. Head for the Town Hall, and everything will make sense."
A while later, the entirety of Show Town gathered at the Town Hall while the Quirky Quintet stood before everyone.
"Attention, everyone!" The Mask announced. "Three things. First of all, we would like to congratulate Skunky and Fifi on their news."
There was talking between the people of Show Town, wondering what the news was.
"Eh, let them explain." Suggested Mr. Mxyzptlk.
Skunky and Fifi cleared their throats, and simultaneously gave their announcement.
"Everyone, we are expecting our first child!" They announced.
There was a loud commotion of cheering and applause.
"Fifi's preggars!" Exclaimed original Babs.
"Skunky, we're so happy for you!" Squirrely happily informed, speaking for all the Woodland Critters.
"And second!" Announced The Mask. "We'd like to welcome the newcomers to Show Town, they're characters from the Ugly Duckling movies from Neptuno Films!"
There was a round of applause to welcome the newcomers.
"Third and foremost!" The Mask Announced. "It has come to our attention that Evil Steve and Hamister have returned. Furthermore, they have formed an alliance with the toon killer, Retnuh, and have summoned a portal which has brought villains to this world."
There was a lot of panic in the Town Hall.
"Hey, people!" Exclaimed Bill Cipher. "We weren't done yet!"
They stopped as Bill Cipher continued.
"So, anyways, some of us will be going to take on the villains, while the rest of you will be safely secured at the base from a few years back. The authors will be implementing security precautions to protect those staying at the base." Bill continued.
"V-v-villains?!" Exclaimed TTL Hamton, beginning to hyperventilate. "What if they attack us?!"
"Calm down, reboot me!" Exclaimed Original Hamton, grabbing TTL Hamtom's arms and shaking him.
"I got this, Hammy." Said Original Plucky before shaking TTL Hamton and slapping him. "Get a hold of yourself, reboot Hamton!"
"Plucky, let me handle this." Said Original Buster, before doing the same as what Original Plucky did. "Snap out of it, reboot Hamton!"
"OG Buster, you're wanted on the phone." Informed TTL Sweetie before shaking TTL Hamton. "Everything is going to be alright!"
"Allow me, boomie." Said TTL Babs before she began shaking TTL Hamton. "We're toons, Hamton!"
Behind TTL Babs was some of the other Tiny Toons, both Original and TTL versions, each holding weapons. There was Original Furrball with a lightsaber, Original Dizzy with a ball and chain, TTL Shirley with a spiked club, Original Lil Sneezer with a hammer, Original Sweetie with a whip, TTL Fowlmouth with a knife, Original Gogo with a revolver, TTL Fifi with a machine gun, TTL Marcia with a medieval axe, TTL Renaldo Raccoon with brass knuckles, and at the end was Pikachu with his cheeks sparking electricity.
"Might be a step too far." Ash whispered to Pikachu, causing his yellow friend to back down.
"You're right." Pikachu replied, speaking via his translator supplied by (Original) Calamity Coyote.
"Hey, I remember you from the Christmas party." Said Original Plucky. "You're... uh... Pocket Shoe?"
"I am a Pikachu, green duck." Corrected Pikachu.
A few hours later, it was time for the quest to begin.
"Remember, kids." Morgana was saying to his children. "Do everything your mother says. Three meals a day and don't draw attention to any invaders. When there's someone at the door, notify someone, don't open it yourselves."
"You got it, dad." Jake replied.
Yaya threw herself into Morgana's arms.
"I'll miss and worry for you." She said.
Morgana reciprocated the hug.
"Don't worry." He said. "I'll be with my friends saving us yet again."
Meanwhile, Porcupiney was talking to Baxton.
"Remember what I taught you." She said. "When you see any villain come in, curl into a ball."
"So, what can I do in this place?" Baxton asked. "All I can think to do is wait for you to come back."
Porcupiney smiled and kissed Baxton's cheek. As she did so, Pikachu approached Original Fifi.
"I don't mean to offend, but I don't think you should come if you're pregnant." He said, sensibly.
"Do not worry about moi." Fifi replied. "I will be fine. Also, do vou know 'ow we recognised each other."
"Like, we could explain." Said Original Shirley with her TTL counterpart standing next to her.
"Not only were you two on Kids WB, there is another universe where you two are a couple." Explained TTL Shirley. "It was in a series called "A Romantic Graduation" which is a great series."
Pikachu and Original Fifi looked surprised.
"Really?" Asked Original Fifi.
"Like, yeah." Original Shirley replied. "And there is more to the other universe thing. There are tons of universes. Like, let me tell you about this next one."
As the Shirleys told Pikachu and Original Fifi about the other universes, the newcomers were exploring the base.
"So, does this normally happen?" Asked Ugly.
"If you mean us staying in a base while villains attack, no." Informed Rocko. "This has only happened once before, or so I've been told."
"I can confirm that is has happened before." Penelope informed. "The last time this has happened, they were aided by the Angry Video Game Nerd."
"Who?" Asked Nico.
"It's a long story." Penelope replied.
Meanwhile, after hearing about the other universes, Pikachu's jaw was in the ground. You could've driven a train through it.
"What's your problem, Pickett Show?" Asked Original Plucky.
"It's Pikachu, Plucky!" Pikachu corrected, sounding annoyed.
To their surprise, Omni-Man flew before them.
"I see the destruction." He informed. "And I see this as an opportunity to prove to my son, Mark, that his words changed me."
"A father figure, huh?" Asked Peacemaker.
"Don't leave me out." Came the voice of Homelander. "Figured I'd tag along since I can do whatever I want."
"I'm going to keep an eye on you, boy." Warned Omni-Man, fiercely.
"You sure having him around is wise?" Asked Mr. Mxyzptlk.
"If he tries anything, I'm going to feed him his own heart." Omni-Man replied.
"Okay gang, let's move out!" Deadpool announced.
Once the doors to the base were sealed, the groups that were going against the villains moved on to take them on.