"So, you are the one whom they call...Doctor Doofenshmirtz?" "Yes, yes I am. I am so glad that someone shares the same passion as me! To take over the entire TRI STATE AREA!" Doofenshmirtz cheered happily. "I, on the other hand, would like to take over this world," The Shredder stated, "And see the world in chaos!" "What? No, I want to only take over the Tri State Area, not destroy it..." As he objected, the Kraang captured him. "The one who is known as the Shredder, what must we do to the one who is known as Doctor Doofenshmirtz?" "He mentioned that he has an enemy called Perry the Platypus, is that correct?" "This is correct, the one who is known as the Shredder." "Hmm." The Shredder pondered for a moment.

"Even though the turtles will not stop me, I fear that this...platypus may stop me and get in the way of plans. You must capture him and destroy him at sight, along with any other who tries to stop me and interfere with my plans." "Understood, the one who is known as the Shredder." The Kraang then proceeded to lock Doofenshmirtz up. "Why are you even doing this fhuhfuhhrfhfhhfh." The Kraang taped his mouth and tied him up and put him aside. "Because" The Shredder answered. "The world has taken what was rightfully mine!"

"Omg this is sooooo exciting!" Irving cheered excitedly. The speculative fiction geek has seen what Phineas and Ferb can do and what they have done, such as saving the second dimension, but never, in his wildest dreams, will he see them working together with four giant talking turtles which came from another dimension. "C'mon, we've got no time for this! The Kraang and the Shredder can just take over this place at any minute now! Hey, Phineas! Is it ready yet?" Raph impatiently asked.

"Almost done, Raphael! Now, for the finishing touches." Phineas stated. "Ooooook, just a little more...And we are done!" "Finally!" "Ok, I will set the coordinates of OUR dimension and get help." Donnie then proceeded to type in the coordinates for their dimension. Suddenly, Donnie's lab is in sight in the portal. "Is that your lab?" "Cool!" "Wow." All the kids who stayed behind to help the turtles, Phineas and Ferb stared in awe. "It's cool, right?" Donnie smiled. "Ok, let's get Master Splinter and Casey and April." "Ok, while you guys get help, someone will have to stabilise the portal, so that there is enough time to get help before the entire portal disappears."

"We will help. Hurry, we don't have much time!" Leo smiled before rushing into the dojo. Unknown to them, April and Casey were already waiting for them. "Guys, we were so worried when you suddenly seem to disappear from the lair. Where were you?" "Come on, there is no time to explain. Is Master Splinter in the dojo?" "Yes, he is. What's with all the hurrying?" Casey asked. "Not now, Jones!" Raph snapped. "Follow Donnie into the portal thingy in his lab. Come on!" Everyone except Leo, who went into the dojo to get Master Splinter, pulled Casey and April into the other dimension.

"So, the Shredder is attempting to take over another world?" "Yes Master Splinter. There are innocent lives at stake Sensei, people can get hurt because of the invasion." "Then we must be ready. I will get some items first and we will be on our way." Master Splinter got his battle gear ready.

When April and Casey went into that dimension, they met two boys standing there with their friends. "Casey, April, meet Phineas, Ferb and their friends." Both groups shake hands upon seeing each other.

-TO BE CONTINUED-