The crossover story of Phineas and Ferb and Future is Wild.
Disclaimer: I don't own Phineas and Ferb and Future is Wild.
Chapter 1 Idea For New Invention
At Flynn-Fletcher's house, Phineas, Ferb and Perry are sitting on the sofa and thinking of what are they going to do today.
"Nah..."Said Phineas and he's looking at Ferb.
"Got any idea?"Asked Phineas and Ferb shook his head as no.
"Maybe TV can help."Said Phineas and he's open the television and see the series called the Future is Wild.
"The Future is Wild? Sounds interesting..."Said Phineas and he's get up to watch it with Ferb.
The episode is about the introduction of the lives, both plants and animals and the look of the planet in all three times.
25 Minutes passed after watched the series...
"Ferb! I know what're we gonna do today!"Said Phineas and he's get out from the sofa with Ferb and go into the backyard.
And then, Phineas got the idea about Perry in his head.
"Hey wait! Where's Perry?"Asked Phineas
Inside the house, when both boys gone, Perry pulls out his hat and wear it and open the picture upon the sofa and revealed a hole and go inside.
Later, he's arrive at his secret lair and go to sit on his chair that in front fo the large computer.
"Good morning, Agent P. We had umm... uhh.. what is it again, Carl?"Asked Major Monogram
"Doofenshmirtz is up to something that is bad again, sir."Said Carl
"Can't believe I forgot about that."Said Major Monogram while Perry's glaring at him in confuse.
"Well, we just heard that Dr. Doofenshmirtz is... is... what is he up to again, Carl?"Asked Major Monogram
"He's planned to go to the future sir."Said Carl
"Yeah! That's it! He had planned to go the future! I believe that he is going to go to the future and brought some sort high tech weapons for his evil plan.
You must go and stop him!"Said Major Monogram and Perry's run to his Platypus-Mobile and ride off from his lair.
Meanwhile, at Flynn-Fletcher's house, in Candance's room...
"Stacy! This is NOT a good thing at all!"Said Candace as she's trying to concentrate.
"All you have to do is just keep calm and think about other things that have nothing to do with your brothers."Said Stacy
"Talk is always easier than do, you know."Said Candace
"Think about happy thing, Candace. Think about other thing that made you happy like... like... Jeremy!
Yeah! Jeremy! Think about Jeremy!"Said Stacy as Candace's closing eyes.
"He's not thing! He's a human being!"Said Candace as she's closed her eyes.
"Just keep concentrate, Candace!"Said Stacy
"Okay... I'm calm... I'm calm..."Said Candace as she's concentrating. Everything going very well until the noises of creating ruined everything.
"CLANG!"
"AAAHHHH!"Screamed Candace and she's fall on back.
"What was that?!"Asked Candace
"CLANG!"
"Sounds like it came from the backyard."Said Stacy
"*Gasp!* Phineas and Ferb!"Said Candace and she's grab Stacy and take her with her and go to the backyard.