The whole neighborhood would be in an uproar. Candace, Phineas and Ferb's sister, would also get involved. She might initially think it's one of Phineas and Ferb's 'imaginary' adventures, but when she realizes it's real, she would use her own unique skills to help. Maybe she could call the police and give them a detailed description of Isabella.
Phineas would be shocked at first. He would quickly shift into action mode. He might say something like 'We have to find Isabella right away!'. Ferb would nod in agreement and start gathering tools and materials for their rescue plan.
As for Isabella's Fireside Girls troop, they would be devastated. But they would also be determined to help. They could organize a search party in the local area. They would spread out and look for any signs of Isabella or the kidnappers. Meanwhile, Phineas and Ferb would be following their own leads, which could involve some crazy inventions and wild adventures.
A practical answer is Chapter 268, because it turns the idea into a concrete scene. The chapter opens with To ensure the company's successful listing, Shen Lan even went so far as..., adds pressure through Having chosen to be his wife, she was determined to be responsible for his..., and ends on.
Look to Chapter 264 for the clearest answer. It begins with Jiang Li first reassured her mother, then opened the chat box with Shen..., keeps building through She had just sent a message when Shen Lan's video call came through., and lands on [Do your faces hurt, you rumormongers?.
A practical answer is Chapter 228, because it turns the idea into a concrete scene. The chapter opens with Huo Ziyang had not stepped out of the house for a whole week., adds pressure through She would never allow such scum in her family!, and ends on Why did you hit Ziyang?" Huo Xuan, one hand.
The best chapter pointer here is Chapter 249, "Maxing Out Wilderness Survival Skills!". It opens with Jiang Yan's body subconsciously shivered twice. and closes on He deserves it!] [It was absolutely the right decision for Jiang Li to....
The best chapter pointer here is Chapter 232, "He's a Pure Man! Purebred!". It opens with But soon, she suppressed this strange feeling and slowly began to speak,... and closes on The moment he saw the information come through, Jiang Li fell silent..
Look to Chapter 271 for the clearest answer. It begins with He had barely finished speaking when he received a withering look from..., keeps building through How did he blurt that out?!, and lands on Gathering her thoughts, Jiang Li looked toward Jiang Yan, who was still....
If you want the clearest chapter reference, go to Chapter 261. Early on, The village chief's eyes nearly popped out after he heard the whole story.; later, the chapter leans on Their village had been harboring criminals involved in illegal wildlife....
Look to Chapter 267 for the clearest answer. It begins with Jiang Li had just turned around when she was suddenly embraced by a..., keeps building through Before she could catch her breath, her shoulder was gripped., and lands on —However, he was indeed about to experience some misfortune..