I'm back sorry for the wait this took me three days to write and the next chapter will be the last so enjoy. I do notown Phineas and Ferb.
PnF Future 8
Before anyone knew it the two pairs of brothers saw a car heading in their direction. It wouldn't matter if they moved or not there was no way they could escape.
"Phineas, Ferb!" Isabella screamed at the top of her lungs she was about to lose her boyfriend and her friend.
Suddenly two figures swooped the future set of brothers.
"PERRY?" Both Phineas and Ferb said in unison as the Perrys brought them on top of different buildings.
Soon another figure ran forward and grabbed the younger boys out of the way.
"Did you see that?" "Are they okay?" "Who was driving that car?"
The younger Phineas and Ferb got up.
"Ferb you okay?" Phineas said dusting himself off. Ferb nodded his head. The two turned to thank their hero who was coughing right now. Phineas started.
"Hey, thanks for saving-" The person then looked up at them to reveal. "CANDACE?"
Yes, Candace. She was no longer their 15 year old sister but a young woman in her 20s, wearing short red dress and a white coat.
"Holy crud are you guys okay?" Older Ferb said as older Phineas and the Perrys ran to them.
"Phineas!" Older Isabella said and kissed him on the lips which surprised young Phineas as he blushed.
Soon a car pulled up in front of the group. To reveal Linda and Lawrence (only older). Linda came closer to the group to see if they were okay.
"Candace what's going on is everybody okay?" Linda then stopped in her tracks when see show (young) Phineas and Ferb. Then Linda was dumbfounded her mouth was wide open and her head keep looking at her sons and their past selves.
"Phineas and Ferb. Phineas and Ferb. Phineas and Ferb" She kept repeating.
Older Phineas raised his hands in defiance. "Mom, before you get all jumpy please let us explain when we get home."
"Great idea, I still have the molecular transporter in my pocket." Young Phineas said as he pushed the button bringing everyone in the living room and the cars outside. This left Linda in complete and udder shock, her face soon turned red and she looked like she was about to pop a artery.
"WHAT IS GOING ON?" Linda screamed at the top of her lungs. Older Phineas coughed into his fist about to explain.
"Mom, this may be a shock to you but you see they are me and Ferb when we were kids." He said pointing to young Phineas and Ferb who just waved.
"WHAT, BUT HOW, WHY ARE THEY HERE?" Linda said almost going crazy.
Older Phineas was about to explain but Candace put her hand over his mouth and said.
"Well mom, remember when I was a kid and I told you all the crazy stuff Phineas and Ferb did this is one of them."
"What you mean to tell me that they did stuff like that when they were kids?" Linda screamed.
"Actually, we still do that kind of stuff today." Older Ferb said sitting on the couch texting Vanessa.
"WHAT? Why didn't anyone tell me?" Linda said.
Candace face palmed her forehead. "Mom I did try to tell you remember? I kept telling you all the things the two did but you never believed me."
Suddenly it all came clear to Linda.
Flashback
"Mom, Phineas and Ferb built a roller coaster in the backyard!"
"Mom, Phineas and Ferb built a roller coaster!"
"Mom, Phineas and Ferb built a monster truck!"
"Mom, Phineas and Ferb made a gelatin monster!"
"Mom, Phineas and Ferb made a super computer!"
"Mom, Phineas and Ferb made a title sequence!"
"You mean this whole time you were telling the truth?" Linda said looking at Candace, who was on the couch next to Ferb filing her nails and said in a bored voice.
"Yeah!"
"Wait a second. Lawrence did you know what the boys were doing? " She said angrily at her husband.
"Well yes, I did tell you remember the monster truck?" Lawrence said unaware how angry his wife was.
This really got Linda mad.
"That it Phineas, Ferb you four are busted." Linda said pointing at the four.
Candace got up from her seat and put a hand on her mom's shoulder.
"Mom, Phineas and Ferb are about to go to college today so you can't really ground them and you don't have jurisdiction over young Phineas and Ferb, but I do agree with you, YOU GUYS ARE SO BUSTED!" She said pointing to her four brothers.
"What the heck are you two doing in the future? It's a good thing I called mom. Do you know how dangerous time traveling is I was afraid of losing you guys again. "
"Wait, what do you mean lose us again?" Young Ferb said.
Candace sighed and answered the question. "Remember when we were kids – I mean early this morning for you guys?" The younger brothers nodded.
"Well when the time machine turned on and you guys disappeared, I was so worried I didn't know what happened to you guys. So me and the other kids made our own time machine and it blew up. I was so scared that something bad happened to you." Candace said trying to fight her to fight back her tears. She then felt two hands on her shoulders, to see older Phineas and Ferb.
"Candace were very sorry we didn't know how much you cared for us, we thought you just wanted to get us in trouble." Older Ferb said.
"Well kinda , I just wanted to make sure you didn't kill yourselves." Candace said and hugged her brothers. With young Phineas and Ferb on the couch eating popcorn and Isabella and Lawrence had tissues wiping their eyes full of tears, Linda in a state of shock, and the Perrys on the floor.
"So boys anymore secrets you had from me and your mother?" Lawrence said now eating some of the popcorn Phineas and Ferb had.
"Does Perry being a secret agent count?" Older Phineas said with everyone turning to the Perrys.
"Really Perry, you're a secret agent that's so cool!" Young Phineas said. Perry then stood up and put his fedora and his future self put on his coat and fedora.
"WOAH, didn't see that coming!" Young Ferb said still eating his popcorn.
"WOW, that's so cool! Why didn't tell us before Perry? " Young Phineas said.
Young Perry and older Perry didn't say a thing.
"Actually he did, but we had our memories erased." Older Phineas said.
"Why?" Their younger selves said.
"You'll find out when you're older." Older Ferb said.
"WOW, I still can't believe all of this is going to happen to us soon Ferb." Young Phineas said.
"Believe it." Isabella said as she hugged older Phineas from behind.
"Wait, when do me and Isabella become boyfriend and girlfriend? Is Candace married to Jeremy? Who-" Before young Phineas could finish his question, Candace stopped him.
"Alright boys I think it's time for you two to go home." Candace said with a smile.
"Why?" Phineas said he had so many questions to ask.
"Boys you know so much already, do you really want to know your whole future before you experience it?" Candace asked.
The boys thought for a second she was right. They did know a little bit of what will happen in the future but they didn't want to know the whole thing.
"Your right, we know so much already, why spoil the rest, come on Ferb it's time to go home." Young Phineas said as he picked up Perry. Everyone went to the backyard where the time machine stood.
"Hey Ferb! Today was a great day, wasn't it? And it is so awesome that you and Vanessa are together." Young Phineas said.
Young Ferb just nodded his face turning red from embarrassment.
"Well…it's time to return." Young Phineas said.
"Wait!" Older Ferb said. "We almost forgot to erase your memory."
"We're going to forget everything that happened today?" Young Phineas said.
"No, not everything just: Perry being a secret agent, Isabella being my girlfriend, and Vanessa being Ferb's girlfriend." Older Phineas said.
"WHAT, WHY?" Isabella said behind Older Phineas. He then grabbed her by the shoulder's and kissed her forehead.
"So the moment can be perfect." He then pulled out a mind eraser device (that looked like something from 'The Men in Black') he, Ferb, Candace, young and older Perry and Isabella put on their sunglasses erasing Ferb and Phineas' memory of those three things.
"Well this seems to be 'good bye' till we turn into you guys." Young Phineas said as they got into the time machine.
"Don't worry it'll be totally worth it." Older Phineas said.
"Boys I just want to say before you guys go back to the past and you two go off to college I just want you to know despite the unnormal things you guys did I was always proud of you." Candace said.
"Really?" Young Ferb said.
"Really and one more thing before you guys go." Candace face then turned red with fury. "IF YOU FOUR EVER TIME TRAVEL AGAIN I SWEAR I WILL KICK MY HIGH HEELS SO FAR UP YOUR BUTTS IT WILL NEVER COME OUT NO MATTER HOW MANY TIMES YOU GO TO THE BATHROOM!" Candace screamed.
The only thing the boys did was gulped.
"Well time to say 'goodbye'." Young Phineas said. Everyone waved as the boys returned home ready to see their sister and friends again.