Epilogue: The Big One Five

"Happy birthday dear Phineas! Happy birthday to you!"

The chorus of the birthday song ended with a round of applause from the assembled party guests. Phineas' birthday parties were always well-attended, but this year's crowd was particularly large due to his impending entry into high school. Everyone who was anyone at Danville High was on hand for the event.

Bashfully, Phineas took the stage and addressed the crowd of partiers. "I wanna thank everyone here for making this a fifteenth birthday party to be remembered. You guys are the greatest, and this has been the best birthday I've ever had. Well, at least the best one so far."

"You say that every year," Candace yelled back, smirking at her teenaged brother. "Now blow out your candles already!"

"I'd love to, Candace, but I don't see the cake yet," Phineas replied, a bit confused by the conspicuous lack of birthday cake.

Ferb stepped up to the stage, holding a cupcake in his hand with a single lit candle on it. "We've decided to do something different this year, Phineas. Your birthday candles are on cupcakes that we've hidden among the crowd. You'll have to hunt them all down to blow them out."

Phineas smiled back at his brother, putting his hands on his hips. "A birthday candle scavenger hunt, eh?"

Ferb nodded in response. "Remember, you're technically not fifteen until you blow them all out."

Eagerly accepting the challenge, Phineas blew out the candle on Ferb's cupcake and jumped off the stage as he began his hunt. He darted through the crowd as he sought his quarries out. His mother had one of them, as did his father, Candace, and Perry who chattered at Phineas as he blew out the candle on his cupcake. He continued through the crowd, finding cupcakes with Jeremy, Buford, and each of the members of Isabella's former troop of Fireside Girls. Nearing the stage again, he found yet another cupcake held by Baljeet, which he quickly extinguished as well.

"That's fourteen," he noted as he scanned the crowd again. "So where's the last one? I scoured the entire crowd."

"I believe the answer to your question is waiting for you on stage," Baljeet told him, pointing his thumb up towards the microphone. Isabella stood by the microphone, her arms behind her back as she tried her hardest to look innocent.

Phineas hopped back up onto the stage and approached her. "So Isabella, whatcha hidin'?"

"Cute," she remarked, smirking at him as she brought the last cupcake out from behind her back. "Happy birthday, Phineas."

"Thanks," Phineas replied, taking the cupcake from her. "This has really been one awesome day. I can't think of a better way to end it."

Phineas took a deep breath and quickly blew out the last candle. The moment it went out, his eyes went unfocused as an explosion of information took place in his head. The memories of that lost day with the Age Swapper flooded back to him. It happened in an instant, but in his mind Phineas re-lived that day in its entirety right up to when Ferb swapped their ages back. He shook his head, snapping out of the sudden reverie, and looked at Isabella again. He only now noticed that she was wearing the makeshift hex nut pendant he'd made for her that day.

"Surprise," she told him quietly. "Baljeet and I both remembered that day earlier this year on our birthdays, but we decided to keep it a secret to surprise you today."

"How'd you manage to keep that pendant for so long, though," Phineas asked curiously.

Isabella held the pendant up as she looked at it. "I always thought it looked interesting even though I couldn't figure out where I'd gotten it from. So I just held onto it with my other jewelry. I started wearing it after my fifteenth birthday when I remembered everything; I just tucked it under my blouse."

Phineas smiled and stepped a little close to her. "Well, I guess I was wrong before. Now I can't think of a better way to end a birthday."

"Hmmm…I can."

Without another word, and before Phineas could react, Isabella grabbed him by the front of his shirt, pulled him close and kissed him fiercely on the lips in front of the entire party crowd. A chorus of whistles and cat calls rose up from the crowd as the pair kissed on stage for quite some time. Isabella finally broke it off and smiled back at Phineas, who now had a stupefied smile plastered on his face.

"So Phineas," she said inquisitively, "best birthday? Or best birthday ever?"

"Please stay on the line, your call is important to us and will be answered in the order it was received," was all Phineas could manage to say in response.

Isabella laughed and put an arm around him, helping him down off the stage and over to the rest of his family. It had now indeed turned out to be Phineas' best birthday ever; or at least, the best one so far. And they had many more still ahead of them to celebrate together.

The End.