This is my first Phineas and Ferb story. So please go easy on me. And I'm Dutch so the Phineas and Ferb in Holland is a little different So if I do anything wrong just tell me.
On the last summer day the Flynn-Fletcher Family decided that they would go to a science museum. Candace was sulking the hole way to the museum while Phineas was constantly talking about it. " This is gonna be so awesome" Phineas said excided. Candace sighed " A science museum isn't awesome it's boring. Mom can't you just bring me home so I can go to Jeremy" "No Candace you have to come with us. We can't leave you home alone" Linda said to Candace who groaned and looked out of the window. They parked in the parking lot. As soon as the car stood still Phineas and Ferb jumped out of it.
"okay you know we have to meet each other atthe car at five. Don't be late" Linda said to the boys and Candace. "yeah mom we know" answered Phineas and Linda and Lawrence went to the gift shop. "If you do anything to bother me I will tell mom!" Candace yelled to Phineas and Ferb "we know Ferb and I will just look at the chemical experiments" "you do that I'll call Stacy" she turned away and called Stacy "Hey Phineas Whatcha doin'?" asked Isabella who suddenly appear behind Phineas "Oh hi Isabella Ferb and I were just going to look at the chemical experiments what are you doing?" "the fireside girls and I were just getting our experimental watching badge" "cool well you can come with us then" Phineas answered. "hey were is Perry?" Phineas asked after he looked around.
With Perry
Perry walked to the secret door knocked tree times and then went to his secret base. "hello agent P. Doofenshmirtz has bought really weird things today like ageing cream and a lot of old food. Find out wat he doe and Stop him." Perry saluted the major and got on his scooter.
Doofenshmirtz evil Incorporated
Perry climbed up the building and then went to throw the window. "ah Perry the platypus I expected you long ago wat took you so long?!" Doofenshmirtz pushed a button and a cage with flowers appeared around Perry locking him up. "Do you like my cage Perry the platypus I thought the old ones were a bit sad…you really like it? Thank you Perry the platypus" Perry just rolled his eyes "so you wanna know wat I'm doing right?" "well the kids who play down here are getting more annoying everyday so I made another Age-Accelerator-Inator but this time it is not for cheese. No now I'm going to use it to make little kid teenagers Muhahaha!" Perry thought about his owners who were in the lab just around the corner. "Dad wat are you doing?" asked Vannessa "oh Vannessa hi you know Perry the platypus right?" "yeah hi" "Dad you are suppose to tell wat you are doing!" "oh…right well with my Age-Accelerator-Inator I'm going to change all the kids to teenagers in the whole tri-state area" Doofenshmirtz explained like it was normal "Dad that is so weird" "no it's not now I will finally have peace and quiet around here" Doofenshmirtz was so busy with Vannessa that he didn't know that Perry had escaped. Perry was trying to break the machine apart but then the machine was put on and it send a big green ray over the whole tri- state area changing all the kids into teenagers. Including Phineas, Ferb and Isabella and their friends. "wow that was weird" Phineas said after he changed. Ferb and Isabella just nodded. Then they heard a explosion and "Curse you Perry the platypus". "Again weird… oh there you are Perry" nobody noticed that they were sixteen and look older now. "let's go back to the car it's almost five o'clock" They walked back to the car and waited for Candace and their parents. "oh my god who are you guys?!" Candace screamed when she saw the boys and Isabella. "hey Candace it's us Phineas and Ferb" Phineas said "No your not my brothers are twelve not sixteen" "sixteen? Oh Ferb look were taller… I wonder wat happened?" "Oh my gosh wat happened?" they heard Linda scream "Were not sure mom…" "We are going back to the museum right now and get you back to normal" Linda said and pushed the boys to the museum while she whispered "my boys my poor boys" "I'm going to the science museum to find a way to turn this back." Vannessa said to Doofenshmirtz "Yeah, yeah you do that I'll start up Norm to clean up the mess" he said not listening to wat Vannessa said. Vannessa got on her father's bike and drove to the museum.