"Hey!" Phineas exclaimed, "The supplies are here!"
Ferb gave the driver a thumbs up. The truck dumped its contents onto the grass and drove away.
"This is going to be sweet!" Phineas shook in excitement.
Isabella appeared from behind the pile of supplies. "Hi, Phineas. Whatcha doin'?"
Phineas jumped in front of her, unable to contain his excitement, "Only building the awesomest, funnest, coolest thing ever!"
Isabella smiled at Phineas's excitement, "What's that?"
"A jetpack!"
"A jetpack?" Isabella echoed, freezing in a frightened position.
"Yeah! It's going to be AWESOME!"
Isabella looked at Ferb, "He's building a jetpack?"
Ferb nodded. He was more worried about Phineas's mental state than what he meant by jetpack. This much excitement was even rarer than his anger.
Phineas began to pull things out of the large pile in front of him. "We need this, and this. This is for later. Not yet. Oh, we need that. Not quite yet. That's one of them. Oh! There's the other one!"
Ferb and Isabella just stood and watched Phineas sort out his pile, worry on their faces. Maybe if he ran around he'd wear himself out?
Isabella glanced around, "He's obviously not going to say it, so: Where's Perry?"
Perry slid down the tube into his lair. He hopped into his chair and saluted Major Monogram.
"Good morning, Agent P. You know the drill. Doof. Stop."
Perry looked at Major Monogram, slightly confused.
"Er," Monogram continued, "We don't really know what he's up to. He's just been sitting in his building. No deliveries. Not even out to get the mail. He won't answer his phone either. He's cooped himself up. Shut out. There's obviously something sinister going on. Put a stop to it."
Perry saluted Monogram again and headed off via his hover car. Perry flew over his house, making sure the children in the backyard didn't see him. Not that they would have while watching Phineas.
Buford and Baljeet had joined Isabella and Ferb watching Phineas running back and forth. Candace walked out of the house, intent on what was going on so she could bust her brothers.
"Phineas, what are you doing?"
Phineas doesn't even hesitate, "No talk, build jetpack!"
Candace shares a worried glance with Ferb, "Jetpack...?"
Ferb nodded. He knew what Candace was talking about.
Isabella shivered, "I don't even dare think about it."
Buford and Baljeet exchange confused looks. They shrug at each other.
"I don't know either, dude. And it's ME," Irving said, flipping through his scrapbook.
Candace glared at Irving, "When did you get here?"