Chapter 21:

No Point of View:

Andrew charged at Phineas and tried to knock him down but Phineas dodged Andrew by rolling to the left.

"Andrew this isn't you stop this madness!" said Phineas trying to turn Andrew back to normal.

"I'm sorry Phineas too many wheels in motion!" started Andrew as he turned around and ran into Phineas knocking him against the wall and knocking the air out of his lungs. Phineas fell to the ground trying to catch his breath but barely could before taking a kick to the face which knocked him against the wall again. Andrew took his chance and tried to stab Phineas through his heart. Phineas luckily regained enough energy to stop the knife from going through his heart but was stuck on the ground trying to hold back the knife.

"Goodbye Phineas Flynn," laughed Andrew as the knife inched its way closer to Phineas' heart.

"Andrew, don't do this," pleaded Phineas as he knew it was only a matter of time before the knife met its mark. Suddenly the door broke open to reveal Ferb and Isabella standing in defensive positions. Once they saw Phineas close to death they rushed towards him and Ferb kicked Andrew off his brother. Andrew quickly recovered and started to try to punch at Ferb, but he blocked Andrew attacks with ease as Isabella knelt beside Phineas to check on him.

"Hey Izzy great timing," thanked Phineas.

"Hey yourself you better be more careful otherwise I might never forgive myself," said Isabella Helping Phineas stand up. Phineas smiled and went to help Ferb out with Andrew. Andrew finally broke through and tripped Ferb by sweeping under his legs. Ferb toppled over and was then kicked across the room into the far wall. Andrew decided to get rid of this nuisance so he pulled out a revolver and aimed at Ferb's head. Right before Andrew shot though Phineas kicked the gun out of his hand and tackled him to the ground. The swift tackle caught Andrew off guard and he was pinned under Phineas' body. Isabella took this chance and put handcuffs around Andrew's wrists and helped Phineas stand up.

"Ok Andrew is subdued and we are headed back to base," radioed Phineas through his wrist communication watch.

"Good work Agent P Doofenshmirtz just finished his Reverse-inator to return Andrew to his normal self," said Major Monogram.

"Copy that we will be there in a few minutes," replied Phineas before ending the transmission.

"Phineas we destroyed all of the robots but a few bigger ones escaped and are headed up towards you," warned Baljeet.

"Ok stay down there and wait for us to escape," said Phineas as he headed towards the door but was stopped when two giant robots blasted down the door. Isabella threw a grenade and blew up the first robot but the second one dodged the explosion and knocked Isabella back several feet. Phineas charged from the left with a pistol and shot at the robot several times making little damage before being punched in the stomach sending him flying back into a computer. Ferb was angered by this and charged at the robot with a pistol and jumped over it and shot at its fragile armored back which damaged some of its circuits but it could still move well enough to push Ferb back. Isabella then came in from the left and did a back flip onto the robot and tore out some rather large wires with her knife. The robot lost function in its right arm but reached over with his left and tried to grab Isabella but she jumped off and dodged the attack. Phineas took this opportunity to attack from the right where the robot was vulnerable and placed a small sticky explosive where Isabella tore out the wires and quickly jumped off to take cover. The robot didn't notice what Phineas had done so it charged at Phineas with a metal pipe but before it could attack its head exploded and it fell to the ground with a loud thud.

"Good work Isabella, and you too Ferb," complemented Phineas. Ferb gave a quick thumbs up and Isabella blushed a little.

"You did great too Phin," returned Isabella with a smile. Phineas felt his heart melt from that smile but quickly regained composure to complete the mission at hand.

"Ok Ferb can you hold onto Andrew we have to go," asked Phineas.

"Of course," replied Ferb holding onto Andrew so he couldn't escape.

"Ok let me destroy his machine really fast," called Phineas as he ran over to the incinerator and planted a C4 charge onto it.

"Ok guys let's leave before this explodes," said Phineas as he started running towards the door. Isabella and Ferb nodded and quickly followed Phineas. After a few minutes they arrived in the lobby where everyone else was waiting along with Buford who was standing on top of a small pile of robots with Adyson gazing at him dreamily.

"Ok everyone let's get out of here before the C4 blows," warned Phineas as he hopped into the hover car with everyone putting on their seatbelts.

"Did you say C4 as in the plastic explosive?" asked Baljeet nervously.

"Why yes, yes I did," replied Phineas starting up the hover car and flying back towards the Flynn-Fletcher backyard.

"Awesome!" exclaimed Buford. In the distance they could hear a small explosion coming from Doofenshmirtz Evil Inc.

In less than five minutes the group arrived at the backyard to be greeted by family and friends. Linda pulled Phineas and Ferb into a hug and everyone talked about the dangers and victories. Finally Phineas took Andrew in restraints down to the giant oak tree. Everyone watched as Phineas was lowered into his base by an elevator. Once inside the base Phineas saw Major Monogram standing next to a giant laser gun with Doofenshmirtz typing away at a computer with Perry watching him.

"Good you're here Agent P, now we can turn Andrew good again," said Major Monogram as he led Andrew over to a red x on the floor.

"Ok Doofenshmirtz hit it!" shouted Monogram.

"Ok Francis," muttered Doofenshmirtz.

"Hey I heard that!" replied Monogram. Doofenshmirtz ignored this and hit a red button on the control panel which made the inator release a beam of green light that hit Andrew and then shut off.

"Did it work?" asked Phineas.

"Hey where am I?" asked Andrew as he had no recollection of what had happened over the last few weeks.

"Andrew?" asked Phineas as he unchained him.

"Hello are you Phineas Flynn the inventor?" asked Andrew.

"Why yes, yes I am," answered Phineas. Andrew shook his hand and brushed himself off.

"I have heard so much about you from my cousin Jeremy," explained Andrew.

"Good I am glad you are back to normal," said Phineas.

"What do you mean back to normal?" asked Andrew confused at what he had said. Phineas took a deep breath and told Andrew the whole story of how he got here. Andrew could only listen in disbelief.

"So wait I almost took over the whole world?" asked Andrew a little scared at the thought.

"Yes, yes you did but luckily we stopped you in time," reassured Phineas.

"Yeah I am so glad I didn't hurt anyone else," said Andrew.

"So do you want to meet my friends and your cousin up top?" asked Phineas as he stood back on the platform.

"Why yes, yes I do," replied Andrew hopping onto the platform with Phineas and was lifted to the backyard.

Back in O.W.C.A. Headquarters:

"Great work everyone now Agent P you can go back to being Dr. Doofenshmirtz' nemesis," stated Monogram. Perry nodded and looked at Doofenshmirtz.

"So if we're enemies again does that mean…" started Doofenshmirtz but was pushed into an escape pod by Perry and launched towards the D.E.I. building.

"CURSE YOU PERRY THE PLATYPUS!" shouted Doofenshmirtz before hitting the side of his building. Perry smiled and walked off. A few hours after apologies and reminiscing Phineas returned to his lair to talk to Major Monogram.

"Hello sir do you still want me in the agency or are you going to erase my memory?" asked Phineas.

"Agent P you are one of the best agents this agency has ever seen and the first human agent I might add so we would be honored if you came and worked for us permanently," said Monogram hopefully.

"Sir it would be my honor," replied Phineas.

"Good here you go Agent P," said Monogram proudly as he handed Phineas a badge and a fedora.

"So who is my new nemesis?" asked Phineas curiously.

"There is an arms dealer named James Voloski," explained Monogram handing him the file. Phineas took it and returned to the backyard where Isabella was waiting.

"Hey Izzy," greeted Phineas as he kissed his girlfriend on the lips.

"Hey Phin what did Major Monogram tell you?" asked Isabella.

"Oh um well I still have to work for him," replied Phineas nervous about what Isabella would think. Isabella was silent for a moment before answering.

"It's ok Phineas I understand just promise me you will be careful," said Isabella.

"Don't worry Isabella, I promise I will," reassured Phineas.

"Good now we better get inside before they eat dinner without us," giggled Isabella as she took Phineas' hand in hers and together they went inside to spend the rest of the summer together.

Andrew spent the rest of the summer helping Phineas out with inventions when Phineas wasn't on missions and apologized for the carnage he caused although no one could really blame him since it was Doofenshmirtz' fault. And as for Perry he continued to subdue Doofenshmirtz over the rest of the summer break. James Voloski, however, well that's a different story.

"Ok that's the last chapter of An Unforgettable summer so I hope you all enjoyed my story. I really appreciate everyone who read this story and also gave good reviews it fuels my desire to write. Also I am going to make a sequel to this called School's in session so look out for it. Again thanks for reading and reviewing."