It was summer again, but it's a Phineas and Ferb story so it's not surprising. However this story doesn't start when they're ten or even eleven. Actually, at the start of this story Phineas, Ferb, and their friends were thirteen. Which of course meant that Candace was eighteen.

Candace's last year of high school was coming up, so the family was taking a camping trip to celebrate. Candace was going to be busy the following summer preparing to move to college, so they wanted to do a final family outing. Even if the outing wasn't Candace's thing. She didn't mind though, she had matured past not wanting to spend time with her brothers so she was glad for this one last outing moment. Well, big outing moment, they still had about a couple months left before school.

The Flynn-Fletcher family weren't the only ones camping, Jeremy and Isabella and her mom Mrs. Garcia-Shapiro came along too. Jeremy was a legal adult now, like Candace, so he was allowed to come along on his own. As long as he didn't sleep in the same tent as Candace (he was so embarrassed when his mom made him promise that, but at the same time relieved that no one else heard). Isabella wanted to come too, so her mom agreed. She always did like the family, and she knew how Isabella felt about Phineas. Fortunately, she wasn't the type of mom who'd blab it all over the place.

Perry came along with no worries of being called into action. He had received word that Dr. Doofenshmirtz had gone on vacation to spend some daddy-daughter time with Vanessa. Perry had to give Dr. D credit: at least he cares about his daughter. Even if he doesn't really seem to care about anyone else. He and Perry had a hate-love relationship so that didn't count.

Because it was their last big outing with their sister for a long time Phineas and Ferb decided not to do any major projects. Instead they would just build a simple flying motorcar for them and Isabella and take a quick flight up the tallest mountain in the area, and then fly back down and spend the remainder of the time with the family. This way they would get their Big Idea out of the way without really interfering with the camping trip. Phineas did ask Candace if she wanted to join them but she decided against it. She just wanted a relaxing vacation before going home where Phineas and Ferb would do more Big Ideas and she would get back to busting them. She even decided to let the motorcar thing go.

Over the past week, they had loads of fun swimming, hiking, telling campfire stories, things like that. Candace and Jeremy also spent a lot of time together, which made Isabella even more lonely romance-wise. Yeah, Phineas still hadn't returned her feelings.

Then one day, everything changed. The group was out hiking alongside the edge of a river with a strong current, when Lawrence suddenly lost his footing and fell in!

"Lawrence!" Linda cried.

"Dad!" Phineas, Ferb, and Candace cried.

"Mr. Fletcher!" Isabella and Jeremy cried.

"Oh my goodness!" Mrs. Garcia-Shapiro cried.

Unfortunately, that river led to a waterfall!

"Ferb come on, I know what we can do!" Phineas dragged Ferb to a clearer area

Instantly Ferb took a tiny metal object out of his pocket. He pressed the button on top and the motorcar unfolded itself. Right...in...front...of...Linda and Mrs. Garcia-Shapiro.

Phineas and Ferb hopped in, not noticing the shocked looks on Linda or Mrs. Garcia-Shapiro's face.

"Wha-buh-is that what I think it is?" Linda gasped; Mrs. Garcia-Shapiro was speechless at the moment.

"Great, the one time you catch them in action and it's the one time I didn't even care!" Candace facepalmed.

Getting over most of the shock, Candace, Linda, Isabella, Jeremy, and Mrs. Garcia-Shapiro followed them. They soon saw Ferb flying close to Lawrence, and Phineas reaching out for him.

"Grab on dad!" Phineas called.

Lawrence grabbed Phineas's arms. Fortunately Phineas was buckled in so he didn't get pulled out of the motorcar. Instead Ferb swerved gently, pulling Lawrence out of the river. Unfortunately the motorcar wasn't built for teens or adults, so it kept flying off balance as Ferb flew into the woods. Ferb tried to land, but there wasn't an area clear enough. He did manage to fly low enough over a bush so that Lawrence could jump safely onto it, but it was too late. Ferb lost control of the motorcar!

"I don't think we can make it!" Ferb said, wide-eyed, as they headed for the side of the tallest mountain!

"Well, at least one of us can." Phineas said with a determined look.

At that, he unbuckled Ferb and tossed him safely into a tree!

"Phineas!" Ferb cried.

The motorcar was still heading for the mountainside! Phineas cringed and ducked down, hoping for a miracle! Suddenly, a teal blur grabbed him just in time! The motorcar exploded against the side of the mountain! At that moment, the others caught up.

Ferb climbed down the tree, and ran over to Phineas. He hugged Phineas, close to tears. Phineas was still a bit affected by the close call, but he recovered quickly and hugged Ferb back.

"Phineas! Ferb! What was that?" Linda cried, still a bit shocked.

"Uh, it was a flying motorcar." Phineas said, confused.

"Where did you get it?" Linda demanded.

"We built it." Now Ferb was confused.

"You built it?" Linda obviously still hadn't entirely recovered. "Do you mean to tell me that all that stuff Candace said you built was real?"

"Of course it was always real." Phineas was really confused. "Something would just come along and make it disappear. We still haven't figured out how it keeps happening."

"But you could've been hurt! Or worse killed! Especially now!" Linda was starting to lose her temper a little.

Candace normally would be glad to have finally won at busting her brothers, but now she was growing a little scared. She still remembered the time traveling incident where revealing the rollercoaster caused a horrible future. She never wanted Phineas and Ferb to really be punished or anything, she just got tired of her mom never believing her about their projects and it grew into an obsession. Plus she also was always worried about Phineas and Ferb hurting themselves.

"But..." Phineas started to protest. "Wait a minute, you mean you never believed that we were going to build what we said we were going to build?"

"Of course not!" Linda started to calm down a little, realizing that there might be a slight misunderstanding here.

"Oh, gee, we thought you not only believed us but were also okay with us doing these projects." Phineas hung his head a little, feeling kinda bad at the moment.

"You thought that?" Linda calmed down a little more.

"Of course, I mean if you hadn't been okay with any of our projects then we wouldn't have done them." Phineas nodded. "We would never want to worry you or anything."

"Yes, well, even so do you realize the dangers you put yourselves through?" Linda was still calm, but had gone back to scolding.

"We did take safety precautions, hard hats and everything." Phineas felt like crying; he never wanted to upset his mom, especially not like this. "We even filled in permits."

"Despite that-"

"Linda." Lawrence interrupted gently. "Look I understand where you're coming from, but you shouldn't be hard on them."

"You knew all along didn't you?" Linda realized, noticing that Lawrence didn't look the least bit shocked.

"Sort of, but like our sons I thought you knew about them too." Lawrence nodded. "Remember back when Candace mastered parallel parking? Phineas and Ferb helped her with that with a monster truck rally. Since she wasn't a legal driver I had to supervise her."

"That does explain the mud..." Linda remembered.

"Right. And remember, if they hadn't built all these things then I...well...they did save my life." Lawrence reminded her awkwardly.

Linda now had completely calmed down. She also noticed Phineas and Ferb's sad looks.

"Please don't be mad at us mom." Phineas sobbed a little. "We didn't know that you wouldn't be okay with our projects."

Linda softened.

"I'm not mad, not anymore." Linda finally smiled. "I just panicked because all those things you did, and what you did just now, were dangerous. I'm a mother, and like all mothers I hate seeing my kids hurt."

"We understand that." Phineas now smiled. "And we're sorry, we never meant to upset you or anything. We just wanted to do great things, and have fun. And some of the things we did were to help others. Like our friends."

"All right then." Linda decided. "Since you boys seem to know what you're doing, I'll allow you to continue your projects. But I do want a full report each day."

"Of course, we love talking about fun stuff with our friends and family." Phineas was back to his cheerful self.

"And Candace, I am so sorry for not believing you in the past." Linda turned to Candace.

"It's okay mom, most of the projects they did were unbelievable." Candace smiled. "And I'll admit I did become a bit too obsessive about the whole thing. It just kinda built up. I'm also glad you're not going to punish them big time, they really have done some great things."

Now that that was over Isabella took that chance to hug Phineas. She also started sobbing.

"Phineas I was so scared, I thought I almost lost you!" She sobbed.

"Hey, Isabella it's okay. I'm okay." Phineas smiled comfortingly, patting her back.

"You don't understand, losing you is my biggest fear." Isabella admitted. "I'm in love with you Phineas."

Isabella then clapped a hand over her mouth. She then mentally cursed her emotions for getting the better of her brain. Especially the speech section.

"W-what?" Phineas was shocked, but not in the bad sense.

Isabella sighed, defeated.

"It's true, I've been in love with you for years." She continued. "Ever since we were kids. I never told you before because I was scared of you rejecting me."

Phineas was still shocked, and also looked upset about something.

"So all those times, the romantic stuff. Creating that cruise ship, when we were in Paris during our trip around the world..." Phineas realized.

"I was in love with you then too." Isabella nodded.

"Oh Isabella I'm so sorry." Phineas said, feeling really guilty. "I never meant to hurt you, I was just preoccupied with other things. Plus back then I didn't really get romance and dating. Including seeing when someone has feelings for someone else. Can you forgive me?"

"How can I not?" Isabella smiled. "I could never stay upset with you for long."

"Good, because the truth is I'm in love with you too." Phineas smiled. "I just realized it a couple years ago, the day after the blank day. You know that day we could never remember."

"What?" Isabella gasped, both happy and confused. "But then why didn't you say anything?"

"Because I'm not ready. I want to continue enjoying being a kid first. I want to wait until high school before dating. But when I'm ready to date, I promise you that you'll be my first and only pick." Phineas hugged her.

Isabella looked ready to cry again, only this time they were tears of joy. She hugged him back. That's when they heard a couple clicks of a camera: both their moms took photos.