All Phineas and Ferb characters, episodes, and locations are Trademarks & Copyright © of the Walt Disney Company 2007-2011. I an in no way affiliated with The Walt Disney Company or any of its subsidiaries.

The brothers ran out of the valley and headed back to the hill. Phineas closed his eyes and pictured some things in his head. When he opened them, there was a table with a map on it. The map was one of this mind as they saw it.

"Alright, Ferb. I have every reason to believe that Isabella is being lead to the Lake of Stray Thoughts. The person leading her, as confirmed by the bits of logic, is a shell of her own consciousness. We all assumed that she returned to her own mind after the separation accident, but it looks like that wasn't the case. She came back into my head, then the fail safes in the Mind Machine kicked in when they picked her up and pushed her back into her own mind. However, the trauma of the separation itself caused it to fracture when it got back to my mind. Her subconscious managed to heal the portion that got sent back to her mind. But it stands to reason that what was left here just wondered. Then you tell me I had my mind split. I bet that second traumatic event might have done one of two things. Either she got split with my mind or went with just one half. Both, I think, would make her snap."

Ferb's hand was on his chin as he listened. "What would she have to gain by going there?"

Phineas had made a white board materialize and was drawing all over, organizing his thoughts.

"If I remember those books I read up on recently, I would say she is trying to do something to my Object of Affection. It can be found at the center of the lake. Whatever it is, I think they are getting themselves into a very dangerous situation."

"And?"

"This shell and the real Isabella are invading a scared portion of my mind."

Ferb waved for him to continue, as he knew this was not the conclusion of the explanation.

"What do you do if someone ask about your mother?"

"I don't want to talk about it!"

"YOU SEE? That is my point. If something is sacred and sensitive to us, we tend to reject anything attempting to invade on that subject. Especially if there is deep emotions connected with it. Its a basic, primitive instinct."

Ferb gave him a questioning look.

"Dude, if that is a basic and primitive reaction, what have we came in contact with before that would act in such a manner?"

Ferb's expression became serious as he understood where his brother was going with this. "If she came in contact with it. . ."

" . . . it would rip her to shreds."

...

They had made it past the Tree of Ideas and were making their way across the barren waste land of Grudges. She noticed how empty it was and took that for a good sing.

At least I know he harbors no grudges toward me about that accident a few days ago. He really was telling me the truth. Not that I didn't beli... you are arguing with yourself, Isabella.

"How much further is it?"

"Not far. Just a bit more." The transparent image of herself was starting to give her the creeps. If this is what Phineas' imagines me as, then I am having a serious talk with him.

"So, what is it like being a part of Phineas' mind?"

"Loud, very loud. But you will see, you will see."

Isabella regretted trying to make small talk again. The more the image talked, the more she wondered if being around her was safe. She had really been happy to see her after they left the valley. Telling her all about the world around them and how it worked. It was an amazing thing to start to understand how everything worked together to keep the guy going. But the longer the conversation went, the more obsessed she sounded.

She had gone on and on about this object in the center of the lake, like it was the only thing that mattered to her. When pressed, she said that she couldn't get close to it. That confused her. Why could she not? What prevented from getting close? More importantly, why does she feel that my presence will make any difference?

"We are here."

She could see what appeared to be ghost floating all around. They went as high as see could see and seemed to all be moving the same direction, almost like they were flowing along a current. Every now and then, she could make out something in the massive mess of thoughts. She saw a saw, a rattle, rings, and something that looked like a picture.

"So this is the Lake of Stray Thoughts?"

"Yes."

"Doesn't look like much of a lake." Suddenly the wall burst into what appeared to rain, falling to the ground. As it collected, it smoothed out to look like a very calm lake. The waters surface was only disturbed by the occasional random thought that passed near the surface, but they vanished as quickly as they came.

"OK, that looks more like a lake. But how did that happen?" She looked over at her floating self, who seemed to be muttering to herself.

'Just as I thought, she has influence here. Yes, we will make it.'

"Hello, are you going to talk to me?"

The other snapped to attention and looked her right in the eye. "Sorry. This place can be influenced by strong thoughts. You said it didn't look like a lake, so it became what you see as a lake. I must agree that it looks much better this way." She floated over the surface, then turned back when she realized she was not being followed. "Come on, this way."

"Won't I fall in?" Swimming in so many random and confusing thoughts did not sound like a fun time. The other floated back over to her.

"Look at what you did. You made the lake into what you wanted it to look like, could you not also walk on the surface of it?"

"I guess I can."

The other grabbed her by her shoulders and looked her straight in the eye. "DON"T GUESS, KNOW!" Then she let her go. The few seconds they touch, made Isabella feel sick. It was like the image was a part of her, not Phineas. But something was very wrong with the image, she could feel it deep inside herself.

"Alright. Lets go and get this over with." She was determined to just see what she needed to and get as far away from this as possible. So there was no more playing around, the feeling had not left her as she pressed further along the lake.. She refused to look down at all the thoughts running around under her feet. Whatever they were, they were not her and would not help her in the mission she had given herself. She walked on and on until the land behind vanished from sight. The image stayed a head of her and seemed to know the way. I just hope we get there soon. The faster I get away from this disgusting figment of his imagination the better.

Before long, an island appeared. The image perked up at the sight of in and her color seemed to brighten. A few moments longer and they could make out a shining sphere at its center.

"THAT'S IT! THAT'S IT!" The image was leaping around in the air with glee. She floated gently near the globe and waved her over as the distance decreased even more.

Something about this just feels wrong. Isabella inched her way closer until they just mere feet away. As they stood before it, the light dimmed to reveal its contents. When they looked in, another girl was looking back.

"You can't be here! RUN. It will find you!." The girl in the sphere yelled at them.

Isabella's jaw was hanging open, the words fell on deaf ears. She was shocked beyond anything she could ever know or understand. Here in Phineas' mind, with it fused back together, she had found the very thing he had the most affection towards. The thing he thought about without thinking. The single most important thing to him. The very object of his affection was staring back and her and she could not believe what she was seeing.

Its...its...its...really...ME!

A roar came from behind her, like that of an angry tiger. She turned to see what could have made such a frighting sound. She gasp in horror as saw some kind of creature barreling toward them. It ran on all fours, with long claws on each finger and toe. As it got nearer, she could see that it was about the size of the real Phineas, that being short. The triangular shaped head was there too, However, it had fangs coming out of it's upper and lower gums. Then she saw it's eyes. They were nothing but glimmering, crimson orbs.

"THE ID!"

Review and have fun. The conclusion is next with my 'Final Thoughts'.