The sun was just beginning to set over the city of Danville and Phineas Flynn was becoming quite nervous. He and his brother had been planning all afternoon and now it was time for their plan to be put into action. But Phineas wasn't sure if it was going to work. What if something went wrong? What if she thought it was stupid? What if she said no? Phineas tried not to think about the last question. Instead, he tried to distract himself by looking at the sunset from the roof of his parents' house. Unfortunately for him, it wasn't working.

"There you are." Phineas didn't even have to turn around to know that his brother was behind him. He just continued to look out onto the horizon as his brother sat next to him. "Isabella will be meeting you at her house in ten minutes. Are you ready?" Phineas snorted and turned his head to the side, away from his brother. "I take that as a no, I assume."

"What if she doesn't like it?" Phineas asked. Ferb rolled his eyes.

"She will," Ferb said. "She told me herself that it is her favorite. Don't worry."

"But-"

"No," Ferb said. "Whatever you are thinking, it won't happen."

"I was just wondering if she would say yes," Phineas said, frowning. Ferb rolled his eyes.

"That will happen," Ferb said. "You have nothing to worry about."

"What if it rains?" Phineas asked. "What if Isabella gets sick while we're flying? What if the suit doesn't work with my adult body?"

"Okay first," Ferb said, "it won't rain. We already checked the weather. If it does, I'll make sure to change it. Second, Isabella has a strong stomach. She will not get sick. Three, you're taller than you were when you were ten which means the suit will work fine with your adult body. It no longer takes two to operate."

"Okay," Phineas said, taking a deep breath. "To the Nest!" he cried. Ferb smiled and took a remote out of his pocket, pressing the red button as he did that. The brothers watched as an egg came out from the tree in the backyard and closed up around them.

"We really need to make a new entrance," Ferb said as the egg dropped them onto the floor of the secret headquarters of the Beak. Phineas began cracking the egg open with his pointed nose.

"I couldn't agree more my brother," Phineas said, rubbing his nose and stepping out of the egg. "But there is no time to change that. Come on."

A few minutes after this conversation of two brothers took place, Isabella found herself sitting on the roof of her apartment building. She was dressed in a dark blue, strapless dress with a knee-length, A-line, handkerchief, overlay skirt. Looking around, she stood up and let the summer breeze ruffle her skirt and hair, her dress was sparkling like the stars above her.

"Now what is a beautiful woman like yourself doing up here all alone." Isabella gasped and turned around.

"The Beak," she said, surprised and amused. "What a pleasant surprise! Is Ferb in there too?" she asked, walking over to where the Beak stood and knocked on the metal legs.

"No," the Beak said. "It is just me."

"A date, just the two of us," Isabella said teasingly. "Who are you and what have you done with my Phineas?" Isabella could see Phineas smile from behind his mask.

"Care to join me on this glorious night?" Phineas asked, holding his hand out to Isabella. Isabella smiled and grasped Phineas's hand.

"Where are we going?" the young Jewish-Latina woman asked as Phineas held her bridal-style.

"It's a surprise," he answered and he flew up. Isabella squealed with glee as they flew around skyscrapers and under bridges.

"Phineas stop," Isabella screamed when Phineas pretended to drop her.

"Have a little faith Isabella," Phineas said, chuckling. "I would never let you fall."

"Are we there yet?" Isabella asked. Phineas looked down.

"Almost," he said, squinting. After a few more seconds he smiled and started descending. Once he touched down, he gently let Isabella down and pressed a button on the suit. The suit shrunk down, turning into a bracelet on his wrist.

"Where are we?" she asked, looking around. They had landed in small clearing surrounded by tall trees. Phineas only smiled at her question, grabbed her hand, and started pulling her through the forest around them. Isabella wished she had put on more sensible shoes than high heels. Leave it to Phineas to plan a date in the forest.

After a few minutes of walking, or in this case Phineas pulling and Isabella being half-dragged, they finally made it to their destination. At least, Isabella assumed it was their destination since Phineas had stopped. But before Isabella could ask why they stopped in front of a tree, Phineas pulled her once more so that they were just barely touching the trunk of the tree. Looking down, Isabella saw that they were standing on a wood floor that she could just barely see through the grass on top. She looked back up at her boyfriend just as Phineas touched a knot on the tree. Isabella gasped as railings came up from the ground and wrapped around the floor underneath them. The floor then began shooting up the trunk of the tree like a lift. Isabella held on tighter to Phineas's hand. After a few more seconds of that, the lift stopped. Isabella looked around and saw they were in a tree house. Isabella opened her mouth to speak but she was so mesmerized, no words came out.

Silver paper lanterns hung from the tree branches above them while twinkling lights wrapped around the branches and up and down the trunk of the tree. A platform was attached to the side of the tree and gently rested on a bigger branch underneath it. A table had been set up on the platform with a white table cloth and two chairs. A lit candle and some rose petals decorated the table.

"Oh, Phineas," Isabella finally said, stepping off the lift and walking towards the table. "It's beautiful."

"You like it?" Phineas asked, following her to the table.

"Of course I do," Isabella said. "It's so beautiful and romantic." Phineas smiled.

"Good," he said. Rushing in front of Isabella, he beat her to her chair and pulled it out for her. Isabella smiled and said thanks while sitting down. He pushed her chair in and went to take his seat.

"So what are we eating?" Isabella asked as she placed her napkin in her lap. Phineas leaned down underneath the table and came back up with two covered plates.

"First," he replied, "is a delicious salad made by yours truly." He took of the lid to show Isabella and then placed the plate in front of his girlfriend. He then poured some water for them both to drink since they were still both underage.

"So Ferb didn't help you?" Isabella asked, teasingly. "Isn't he the cook?" Phineas frowned at this.

"Yeah but I wanted to do everything on my own," he replied. "The only thing he did help me on was making the tree house. Everything else, making the food, decorating the space, was all me."

"Well you did quite a fine job Phineas," Isabella said. She took a bite of her salad. "And this salad is really good."

"Thank you," Phineas said, taking a bite as well. Isabella smiled and continued to eat the rest of her salad.

As the night wore on, Phineas was feeling less nervous. He served Ajiaco soup, which Isabella deemed her favorite soup, and then he served the entrée, brisket with sun dried tomatoes. Finally, once Isabella had put down her fork, Phineas stood up and told her to stand up as well.

"What, no dessert?" Isabella asked, standing up.

"Don't worry," Phineas said. "There is no dinner without an amazing dessert. Unfortunately for us it is not here."

"Well then where is it?" Isabella asked. Phineas only smiled and walked over to Isabella. He took of the Beak bracelet and, grapping her arm, slipped it onto her wrist. "What are you doing?"

"You get to fly as the Beak," Phineas answered. "I figured since it was your favorite invention you should get to use it tonight too." Isabella squealed and fingered the bracelet with her hand.

"Okay," Isabella said, not even wondering how Phineas knew the Beak was her favorite. Phineas grinned and pushed a button on the bracelet. Suddenly, the bracelet started to cover Isabella until she was completely covered by the suit. "Oh wow, this is so cool!"

"I figured you'd like it," Phineas said. But at that moment, Phineas became very nervous. All his previous fears were coming back. He could see the entire night going downhill. It took him a few seconds to realize Isabella was talking to him. "What?"

"I said how do I fly this thing?" she said.

"Oh, right," Phineas said, shaking his head. He climbed onto Isabella's back and wrapped his arms around her neck. "Okay, so inside the legs is a leaver that starts the jetpack. Just hit it with your foot. Then you just jump up and let the jetpack push you forward. Then you steer with your mind." Isabella nodded in understanding and before Phineas could add anything else, they were up in the air.

"Oh, I'm so sorry," Isabella said when they almost ran into a tree as they were leaving the forest.

"It takes a while to get used to," Phineas said. "Don't worry."

"So where am I supposed to be going?" Isabella asked. Phineas squinted his eyes and pointed to a spot a few miles away.

"See that blue blinking light right there?" he asked. Isabella squinted and nodded. "Good, because that is where we need to go." Isabella nodded again and Phineas felt them speed up. It didn't take them long to get to the spot. When they got there, Isabella saw that the blinking blue light was actually the Danville Lighthouse.

"Why are we at the lighthouse?" Isabella asked, landing smoothly on the lighthouse roof. Phineas dropped down off the roof and pushed a button on the suit, changing it back to a bracelet.

"We are here because we need to be here," Phineas answered. "Nice landing by the way."

"Thank you very much," Isabella said, giggling. "It was a lot of fun." Phineas nodded in agreement and sat down on the roof, holding his hand out to Isabella. Isabella grasped it and slowly lowered herself down next to her boyfriend. The two sat there, staring out at the water, for many minutes until Phineas broke the silence.

"Did you have a good time?" Phineas asked, softly. Isabella was caught off guard by how shy Phineas was acting but she nodded all the same.

"Yeah, although I am still waiting for that dessert," she said, smiling. Phineas's eyes widened.

"Oh right I forgot," he said. Getting up, he quickly walked to the edge of the roof and swung himself down so that he landed inside the lighthouse. Before Isabella could call out to him, he reappeared with two hot fudge sundaes. "Here we are two sundaes with all the works." Isabella's eyes widened at the delicious treats. The sundaes were held in tall, clear glasses that held layers of vanilla bean ice cream and hot fudge. On top was a sweet lover's helping of whipped cream, chocolate sprinkles, chocolate sauce, and a cherry. Isabella licked her lips when she saw them.

"Yummy!" Isabella exclaimed when Phineas handed her one of the sundaes. Once Phineas had handed her a spoon, she dug right in. Phineas had a nibble of his but mainly he just watched Isabella.

"The ice cream is from the moon, you know," Phineas said. "The cows are doing really well up there. I went to go check them out earlier this morning to get some milk for the ice cream. Before we know it, the moon will be like a second earth up there with all that grass." Isabella just nodded at what he was saying.

"I can tell this ice cream is from the moon," she replied when she swallowed a spoonful of fudge and ice cream. "It tastes amazing."

"Good," Phineas said, smiling. Looking down at his sundae, he realized that his stomach was churning in an uncomfortable way and figured eating ice cream wasn't going to help much. So instead, he pretended to eat the sundae and every time Isabella looked away, he would toss some to the ground to make it look like he was eating it. He was probably making some ants very happy right now.

Meanwhile on the ground…

Ants: Yay! Ice Cream!

Back on the lighthouse roof…

Isabella was almost done with her ice cream before she put the glass down next to her. Phineas's eyes widened and he asked her if she was going to finish.

"I'm kind of full," she replied. "Why? Do you want some?"

"No," Phineas replied. "It's just there's a clue at the end."

"A clue?" Isabella asked, raising an eyebrow.

"Yeah," Phineas said, pulling at his ear. "For, uh, what we're going to do next."

"Really?" Isabella asked, excited. "There's more?"

"Yeah," Phineas said, smiling.

"But why is it at the bottom of my sundae?" Isabella asked, peering inside her glass.

"I thought it would be more interesting that way," Phineas said, shrugging his shoulders. "It's kind of like a Cracker Jack box."

"Cool," Isabella said. But then she frowned. "But I can't eat anymore of this."

"Just dump it out," Phineas said. Isabella looked at him but did as she was told. She took a big spoon of her treat, jiggled it to make sure there was nothing in it, and tossed it over the side of the roof.

Meanwhile on the ground…

Ants: Yay! More ice cream!

Back to the roof…

"So," Isabella said, trying to break the awkward silence. "What are we doing after this?"

"That's for you to decide," Phineas replied. Isabella nodded in understanding and looked back at her spoon. She scooped up some more of the dessert and flung it off the roof. Phineas judged that she had one, maybe two, more spoonful, left. This was the moment he had been waiting for all day.

"It better not be a rollercoaster ride," she said as she threw another spoonful away. "I don't think my stomach can take it. I guess I could eat the last spoonful," she said when she realized the last bite was small. After the last savory bite, she looked down to see nothing at the bottom.

"You need to scrape some off the side of the glass," Phineas explained when he saw Isabella's confused expression. "Otherwise it won't work." Isabella looked at Phineas confused but shrugged her shoulders and did as she was told. Fortunately for her, she had little to scrape.

Once the glass was cleaned off and the spoon was resting inside, Isabella looked at Phineas for more instructions. Phineas just motioned for her to watch. Suddenly, the young woman felt the glass vibrate in her hand. She turned and watched as the glass began shrinking and folding into a small crystal glass box. Slowly, she opened the box and saw a ring resting inside. She gasped and looked over to where her boyfriend had been sitting. Only now he was kneeling on one knee, his hands cupped around hers.

"Isabella," he said. "I've known ever since the moment I met you that you were a special girl, and it took me a while to realize that I had feelings for you that surpassed the feelings of friendship. Though it took me a long time to figure that out, it didn't take me long after to realize you were the only girl in my life. Isabella Garcia-Shapiro, will you marry me?" Isabella could feel her breath caught in her throat. She wanted to say yes the minute she saw the ring but she held her cool so he could say his speech. But she couldn't hold it any longer.

"YES!" she screamed, making Phineas cringe. She hugged him tightly and Phineas made a sigh of relief.

Once she had let go, he took the ring out of the box and placed it around her left ring finger. The ring was two sterling silver bands that wrapped around each other like a loose braid. A modest sized diamond sat on top with two blue sapphires on the side. Inside was the inscription, "There is no impossible with you by my side-Phineas." Isabella cried when she read the inscription and hugged him again. When she let go, she kissed him.

"This is the best cracker jack prize ever," she said and kissed him again.

"I know," he replied. Holding her hands in his, he kissed her passionately. Isabella returned the kiss and the two of them sat there in each other's arms, their whole lives together to look forward to.