Prologue
Once upon a time, ...
There was a battle that has been waging for 40 years. A war that has raged within the Mishima family, one that has pitted father against son, grandfather vs. grandson, for the control of the Mishima Zaibatsu. They even sponsored the King of Iron Fist Tournament, a legendary martial arts tournament that pits the world's strongest fighters against each other for fortune and glory. It had been home to such many battles.
As you probably remember, Jin Kazama - the son of Kazuya Mishima and grandson of Heihachi Mishima - had used his position as head of the Mishima Zaibatsu after gaining ownership of it following his triumph in the 5th King of Iron Fist Tournament. He only then started a worldwide war in order to wake up a nefarious demon known as Azazel.
Jin did all this to rid himself of the Devil Gene that taints his bloodline by sacrificing himself to beat Azazel, but his attempt ended in failure for the curse is still within him, following Azazel's demise and defeat.
Only one question remained: Could the world really be considered saved?
But that's a whole other story...
For right now, the battle between the Mishima Zaibatsu and G Corporation, led by none other than Kazuya Mishima, still rages on day after day for the prize was world domination as it was winner-take-all. Kazuya hated his own son and father, yet he can't tell which one of them still runs the Zaibatsu, and he's the current CEO of G Corporation.
But soon their battle may take an unexpected and accidental turn...
...for Danville, the jewel of the Tri-State Area, filled with cozy houses on tree-lined streets and tall skyscrapers in the heart of downtown area, on a completely different world in another universe.
Why, you may ask?
Because this is the story of that day. The day when two universes collide, the day when Danville and the entire Tri-State Area was on the verge of epic proportions between the Mishimas. The day when...
...Phineas and Ferb joined forces with the fighters of Tekken!**
**The following crossover may or may not fall under the canon of neither Phineas and Ferb or Tekken!
Opening Title Sequence
A light cracked out from the ground making a bigger crack. To the heavy metal rock music, the opening logo of 'Phineas and Ferb X Tekken' rised from the ground. Zoom out on Phineas and Ferb wailing on their electric guitars as the logo rises up.
When they finished, Ling Xiaoyu dropped by, riding on Panda.
"Panda, look! Phineas and Ferb are making a crossover!" Xiaoyu said.
"Yeah, we are!" Phineas said as he and Ferb play the last chord.
ACT I
It all started in the Headquarters of the Mishima Zaibatsu, where they were on going with their battle with G Corporation.
Life after the King of Iron Fist Tournament wasn't that easy. All the rivalries, battles, fights...not to mention the violence.
For Nina Williams, a cold-blooded assassin and Jin Kazama's personal bodyguard who also worked for the Zaibatsu, it was just part of the job. It makes her forget what real life was like.
While the King of Iron Tournament is still going on, things were going underway.
"Increase surveillance," Nina ordered the Zaibatsu troops, "If those G Corp scum so much as sneezes, I oughtta know."
Suddenly, an alarm came off as they had checked the surveillance cameras all over the Zaibatsu HQ for intruders. And indeed, there was intruders.
Nina knew who it was: G Corporation.
"Go deal with them," Nina ordered them, "I'll see what the fuss is about..."
As she did, Nina soon find herself at the top of the Mishima Zaibatsu HQ, only to discover that she was about to get a surprise...from her own sister.
"Well, well," a voice appeared, "If it ain't my dear sister, Nina."
Nina turned around to see whose voice it was. It was Anna, her own sister, who had joined forces with G Corporation and became Kazuya Mishima's bodyguard.
It was obvious that Anna had led the ambush and attack on the Zaibatsu.
"I thought that you'd be caught in my trap," Anna said to Nina, "I'm SO impressed!"
"Anna," Nina replied, a little unimpressed to see her sister again, "What do you want now this time?"
"What else?" Anna said. "Trying to fulfill my boss's desires."
"Just like old times," Nina said.
And so, in their fighting stance, Anna and Nina Williams began their rivalry fight. Nina had the upper hand when it looked like she's winning this battle. But just when she was about to finish her sister off, a mysterious portal somehow appeared and Nina, who was about to use her kicks on Anna, accidentally went right into it!
Anna tried to go after Nina, but the portal had closed.
"Where did that portal come from?" Anna began to ask herself, "And where will my sister be off to this time? I better report and intel this..."
As Anna and the G Corporation troops retreated from their ambush on the Mishima Zaibatsu HQ, the questions were still on Anna's mind: Where did her sister, Nina, go? And where did that portal come from during their fight?
Well, the answers don't lie on the world of Tekken, but they lay on another universe, in a completely, different world...
...in the town of Danville, the jewel of the Tri-State Area, where one teenager was on going with her perfect summer day...well, almost.
It was another day in Danville. The sun was shining, and the birds were singing.
Candace Flynn was just minding her own business, with absolutely no idea of an unexpected visitor coming from another world-which'll lead to events that may yet to come and determine the fate of Danville and the entire Tri-State Area, as she looked out the window at the backyard to see what her brothers, Phineas Flynn and Ferb Fletcher, are up to as they were looking at some blueprints, but found out nothing yet.
"Same ol' morning, same ol' routine," Candace said to herself, "I spent most of my summer trying to bust my brothers and yet I failed all the time. Well, the next time I see what they're building, I'm gonna bust them for sure."
Just then, her phone rang, and Candace answered it to see who's calling her. It was her best friend, Stacy Hirano.
"Candace," Stacy called her out, excitedly. "You're not gonna believe this. I just got us two tickets to..."
"The Bettys concert," Candace and Stacy shouted in unison as they screamed happily.
"But I just can't...," Candace said, "Not while my brothers are planning something big, and I had the sudden urge to bust them."
"Okay, that may be some complicated way of phrasing this...," Stacy replied. "Candace, don't you think it's best that you forget busting and just...have fun for a while?"
"Believe me, I tried...," Candace said, feeling moped. Then she thought about it and replied, "Okay, fine. But only because you said so."
"That's the spirit, Candace," Stacy replied.
"Maybe I'll take a walk to Danville Park before I get boost up for the Bettys concert!" Candace exclaimed.
And that's exactly what she did a moment later, but that's where she discovered something...usual...
"Finally," Candace said to herself, "Feeling relax and it feels so-"
Suddenly, Candace fell right into what appeared to be a giant hole, which means that something had crash-landed in the Park.
"Hey! What gives?" Candace yelled, then she looked around the crashed hole, "Now who would be stupid enough to-?"
Just then, when Candace turned to see something, she screamed and tried to climb up out of the hole.
But she turned to see that it was only just an unconscious woman with a blond ponytail hairdo and also wearing a black leather outfit.
It was Nina Williams, who appeared to have hit her head in the crash.
"Well, I can't just leave her here," Candace said. Then, she noticed a grappling hook in her suit. "Finally, something to get me - and her - out of this sinkhole."
Soon, Candace began carrying an unconscious Nina on her way back to the Flynn-Fletcher house, where she put Nina on her bed. Candace's arms were so tired from carrying Nina.
"Whew. Look at this poor ol' fashioned girl," Candace said, almost went up to her, "Crash-landed out of nowhere. This is some surprise...unless it's not one of my brothers'!"
Suddenly, Nina had woke up already, just as Candace puts her hand on Nina's mouth for her to be silent.
"Shhhh! Quiet," Candace told Nina, "My brothers, Phineas and Ferb, had planned many surprises, and you are not one of their surprises."
Nina muffled, Huh?
"Will you be quiet?" Candace said. "You're gonna get their attention!"
Nina, who had quite enough of Candace's nonsense, just got Candace's hand off of her mouth as she tried to ask, "Where am I?"
"The Flynn-Fletcher house, my room," Candace said, "which won't be your hiding place much longer if you don't be-"
"Candace," a voice appeared.
"It's my mom! You got to hide!" Candace cried, trying to hide Nina in her closet.
From the hallway, Linda Flynn-Fletcher, the mother of Phineas, Ferb, and Candace, had just pass by her daughter's room and only notice that Candace was just brushing her hair.
"Candace," Linda said. "I just wanted to let you know that your father and I are off to the Grand Canyon for the week. You're in charge, okay?"
"Okay, sure," Candace said as she had just continued brushing.
After her mom was gone, Candace was relieved as she stopped brushing for it was a distraction to keep her mom from seeing what she was hiding in the closet.
"Whew! That was a close one," Candace said.
Suddenly, Nina opened the closet door and grabbed Candace by her shirt.
"You'd better tell me what's going on here before I won't go easy on you," Nina said, being serious.
"Uh, that wouldn't be necessary," Candace replied.
"Last thing I remember, I was on the rooftop of the Mishima Zaibatsu...," Nina began explaining.
"If you could just put me down," Candace interrupted, asking Nina to let her go.
"...fighting down my sister who led the ambush...," Nina continued.
"Over there would be great, on my bed," Candace said.
"And then I was hurtling through a portal and felt unconscious," Nina continued, "but then you put your hand over my mouth, so I am going to ask you one last time: Where am I?"
Candace gulped and answered, "Danville?"
Nina soon looked out the window and realized that Candace was right. She was in Danville, in the Tri-State Area, in a different world...in another universe!
"I'm in... another universe," Nina said.
"Well, to me, it's just home," Candace replied, "But to you, probably yes."
Nina sighed in disbelief.
"Now if you excuse me," Candace said to Nina as she was heading for the backyard, "I have some 'business' to deal with."
Nina looked at Danville, the neighborhood, and then back at Candace. She had no idea what Candace was talking about. Whatever strange world she had landed in, Nina may or may not want to leave.
In the backyard, Phineas and Ferb were going on with their latest idea when their sister went up to them.
"Hi, Candace," Phineas greeted her.
"I'm not here for hi's," Candace interrupted them, "Today is one of the most important days of my life. See, the Bettys are gonna be there in Danville, and I'm not gonna be distracted by any more of one of your little project thingies!"
Just then, Stacy showed up, as did their friends, Isabella Garcia-Shapiro, Buford Van Stomm, and Baljeet Rai.
"Hey, Candace! Uh, what are you doing?" Stacy asked, noticing Candace talking to her brothers.
"I'm just giving my brothers a little reminder before we head out," Candace replied.
"I thought I told you to take a break from busting," Stacy replied.
"You did. I just went to the park to relax for a bit, like you asked," Candace tried to explain, "But something came from a giant hole. Well, someone, actually."
Before anyone could respond, Nina soon came into the backyard, looking at the boys' project book of their inventions and ideas.
"A giant roller coaster," Nina said, looking at the pages of their project book, "A plane made out of paper? And jet-pack volleyball?"
"Who's your new friend?" Isabella asked Candace.
"Everybody, this is Nina Williams," Candace replied, introducing them to Nina, "Nina, this is my best friend, Stacy. My brothers, Phineas and Ferb. Their friends, Isabella, Buford, and Baljeet. Hey, where's Perry?"
"Where else? He does whatever he wants," Phineas replied.
"Who's Perry?" Nina asked.
"He's our pet platypus," Phineas answered.
"What are the odds?" Nina said in dismay.
"Everybody, listen," Candace said. "Nina here had just landed smack-dab from another universe."
"Another universe?" Baljeet said, fascinated by that utmost discovery.
"I found her, save her, and brought her home to you, because she's a little bit ticked off about being in our universe," Candace explained as Nina nodded.
"Well, then. That does explain everything," Phineas realized. "Ferb, I know what we're gonna do today."
"Does your brother have to said that?" Nina asked.
"It works that way," Candace replied. "Come on, I might give you a tour of Danville."
"Hey, wait for me," Stacy cried, catching up to Candace and Stacy.
While Candace and Stacy give Nina a tour of their home, the kids got right to work on building Phineas and Ferb's latest invention: A universal-portal machine, so that they can analysis the proper world a visitor is from, thanks to the data on the screen, and then, with a push of the button, a portal will open to that world.
"Okay, everyone," Phineas announced a little later. "I think it's all set. Now, we'll just need to scan Ms. Williams so we can find the exact universe she's from."
"Already done it," Baljeet said, with a little dimensional scanner in his hands, smiling. He had already done that before Nina left.
"Well, that was quick." Phineas said with a smile.
While the gang had finished their latest invention, another question had been brought up: Where did that mysterious portal come from that brought Nina to Danville?
Well, that answer lies elsewhere in Danville, as we look back earlier before Nina's arrival, and that answer lies at the lair of an evil scientist at the headquarters of Doofenshmirtz Evil, Inc.
Doofenshmirtz Evil, Incorporated...
Earlier (Like way, waaayyy back).
Across the town, on the top floor of Doofenshmirtz Evil, Incorporated, Dr. Doofenshmirtz couldn't wait to unveil his latest invention for he had Perry the Platypus, who unbeknownst to his owners was actually an agent for O.W.C.A. (Organization Without a Cool Acronym), finally under his latest trap.
"Now, Perry the Platypus, prepare to be in complete fear as I open a portal to not another dimension, but another universe, as I had just made an upgrade to my latest -inator. BEHOLD! The Other-Dimension-inator...2.0!"
Agent P was confused. He couldn't believe that Dr. Doofenshmirtz upgraded his latest -inator that'll open portals to other universes, not dimensions. What are the odds?
"I know, I know it's not shocking, but it was, you know, for the dramatic," Dr. D said to Agent P. "Anyway, like I said, I'm going to use it to open portals to other universes. When that happens, I'll recruit many villains. And with their help, I will finally conquer the entire Tri-State Area!"
Agent P blinked. Now he gets it!
"I mean, I know that some villains wanted something in return," Dr. Doofenshmirtz said. "If they plan to double cross me or something."
As Doofenshmirtz continued complaining, Agent P manage to free himself from the trap and then destroyed the Other-Dimensionator 2.0.
"Oh, come on!" Doofenshmirtz said, angrily as Agent P left, "You broke free and you already destroyed my -inator? And what's next? You're just gonna thwart and leave? For a minute there, I thought this was going to be one of those 'special extended episodes' kind of thing like last time*. Anyway, curse you, Perry the Platypus!"
*Don't believe him? See Phineas & Ferb: Mission Marvel to remind you.
As Agent P just left, a piece of the broken Other-Dimensionator 2.0 zapped right up to the sky. The beam reached far, far away from their universe, across the cosmos, beyond the stars, and it hit right into...
...the Mishima Zaibatsu HQ, in the world of Tekken, in another universe!
Which kind of explains the whole thing! Now, back to the story...
Now.
Dr. Doofenshmirtz looked up the sky to find where the beam from his upgraded Other-Dimensionator 2.0 went while Norm, a giant robot who was one of the doctor's inventions, was cleaning up the debris.
"Make sure you pick up the big pieces and the little pieces," Dr. Doofenshmirtz ordered.
"Right away, sir," Norm replied in his robotic voice.
"You know, the -inator did get one shot before it got...uh, destroyed," Dr. Doofenshmirtz said with a shrug. Then he pondered, "Hmmm...I wonder if it hit something."
Meanwhile,...
G Corporation Headquarters, if you're a Tekken fan. (Or if you're a Phineas & Ferb fan, another universe)
Kazuya Mishima was sitting in his chair, looking at the footage from their ambush on the Mishima Zaibatsu.
"Well, that could've gone better...," Kazuya said in dismay.
Just then, Kazuya noticed that Anna arrived, smiling as she said, "I have good news! I managed to get intel and data from that portal. This is from earlier."
Anna snapped her fingers to show Kazuya the data of the portal and its origin location. Looking at it, Kazuya's eyes grew widen.
"We've found the origin location of that mysterious portal," Anna said, "It happens to have come from that cozy little town."
Kazuya was irate at what he saw on the screen: Photos of Danville, the Tri-State Area, its neighborhood, downtown, and even Doofenshmirtz Evil, Incorporated.
"So, it was from Danville, USA," Kazuya said, intrigued. "From another universe. As I thought. What kind of crazy universe are we dealing with?!"
"I'm guessing that's where my sister, Nina, is," Anna replied.
"If that's indeed the case," Kazuya said, "The next thing I don't want is for my father and my son to find out."
"That won't be a problem," Anna reassured her boss, "We've got some scientists building our ticket to our destination. Trust me, everything is at hand."
"Very well, then...," Kazuya said. "Danville it will be."
And so, moments later, G Corporation had prepared for their march for Danville as Kazuya was wearing his long black trench coat with a gray suit and red tie. Anna was wearing her secretary outfit consisting of a black mini dress, leopard fur coat, black lace stockings, and black heels.
As the machine finally opened a portal to the Tri-State Area, Kazuya, Anna, and a whole army of G Corp. soldiers soon walked right into it.
But they weren't the only ones coming to Danville...
As Kazuya and his G Corp entourage had left, someone else came to notice the portal to Danville as well.
It was Heihachi Mishima, wearing a traditional samurai-esque outfit made up of an orange vest with Mishima Zaibatsu insignias and a gold and black decorative pauldron on his right shoulder. He wears dark gray pants with red and orange designs on the right pant leg, black socks and golden knee-high samurai boots with purple straps.
And with Heihachi was a big brown bear named Kuma.
"So, Kazuya headed to this Danville," Heihachi said to his pet and partner, "Very well then. And when the dust soon settles on that little town, I shall be victorious! Danville, and the entire Tri-State Area, will soon be in my...IRON FIST!"
With a laugh, Heihachi and Kuma soon jumped into the portal to Danville.
END of ACT I