Hello, everyone, animaldoctor here. This alternate ending was suggested back in November by bt3083, and because of that, I apologize for taking so long to write this. You had a really good idea, and can't wait to get started. The reason why it took me so long is because I am not as active on FanFiction as I used to be. I'm not quitting, just working on some old stories. But let's not worry about that right now. Without further ado, here is the alternate ending for honestly, in my opinion, one of the most disappointing and forgettable (that's why I'm probably getting the storyline way wrong) Phineas and Ferb episodes ever.

"Candace, you did it," Phineas said, congratulating Candace on saving the Earth from being burned. He, Buford, Baljeet, Ferb, and Isabella were on a giant propeller up in the sky, talking to Candace on the earpiece, who had ended up getting the rockets on the other side of the Earth too far toward the sun and somehow managed to turn it off. Suddenly, Isabella screamed from below. Phineas looked down and saw her falling, apparently having slipped from Buford's foot. "No!" Phineas yelled as he glided down to save her. "Phineas, what's wrong," asked Candace. She didn't get back a response.

The gang didn't manage to glide down in time, as Isabella had fallen onto a hill. "Oh no!" Phineas yelled as he ran over to Isabella to see what happened. Candace managed to steer the machine down to the hill and got out of it. Right as she got out of the machine, the ice started to melt, and summer was back to normal. "What's wrong?," Candace asked, and then looked up and saw the horror. Isabella had broken her back in the fall.

Phineas got to Isabella, leaned down, and burst into tears. "Isabella, hang in there," he said. "Anybody have our mega first-aid kit?" On a slow day, they had made a giant first-aid kit with basically everything you could possibly need in terms of medical equipment.

"Um, Phineas,' Ferb said. "It's not possible to fix a broken back, even with our advanced treatments and cures. There's nothing we can do. She's basically dead already."

"No!" Phineas yelled, devastated that his secret crush was dying or was dead already. And just as he had finally figured out she had a crush on him, too. "Isabella?" he asked, and started shaking her to try and wake her up. "Isabella!" he yelled, desperate at this particular point.

Isabella fluttered her eyes open just a little bit. "I love you, Phineas,", She said.

Phineas then said," I love you, too."

Isabella was surprised at the fact he didn't start to ask so many questions about what she had just said, so she asked, "Did you know?"

He simply answered, tearfully, "I was starting to figure it out."

Isabella closed her eyes for the last time as Phineas held her in his arms. This was it. No more "Whatcha' doin?" No more talking with one of the friends he trusted the most. No more Isabella Garcia-Shapiro. Phineas just sat there for a few more minutes, crying, holding Isabella in his arms, as the rest of the gang slowly dissipated and went back home.

Oh, geez, why am I writing such sad stories. Oh, yeah, because I promised I would give you guys your alternate endings, no matter how strange or sad they are. Man, I sort of regret that now. Oh well. Either way, sorry I;m not going to be as active, but I am not quitting, so you guys can count on more soon. If you would like to suggest your own Phineas and Ferb alternate ending, Phineas and Ferb or Perry and Pansy story, or dragon perspective, please leave it in the reviews below (sorry if I don't get to it in a while). Thank you for reading, and I will see you in the next story.