Linda got the mail and spotted a pink envelope. It read, "To: Phineas Flynn and Ferb Fletcher, You're invited!" Linda called "BOYS!" and Phineas and Ferb dashed downstairs and saw the pink envelope. The letter read:
"Phineas and Ferb,
You are invited to my pool party. The whole neighborhood is invited and you are too.
-Isabella."
Phineas and Ferb could hardly wait! Candace walked downstairs sleepily. Phineas told Candace they were invited to a pool party, then Candace wondered where Perry was. Perry appeared in his lab in a flash and Monogram told him Doofenshmirtz is up to no good in his suburban house. Perry took off, walking, as it wasn't too far away from the Flynn and Fletcher's house. He noticed Phineas and Ferb walking across the street, but luckily, their backs were turned at Perry. When the boys arrived, it was almost PACKED in the Garcia-Shapiro's backyard. Ferb tapped Phineas on his shoulder and turned to see a goth girl. Ferb eyes turned WIDE with hearts. Vanessa sternly looked at Phineas and he said, "WHAT?" At Dr. D's suburban home, Perry crashed through the fence. Doofenshmirtz was busy swimming in the pool, completely ignoring Perry. Perry splashed into the pool. When Doofenshmirtz told him he was taking the day off, Perry shrugged and went to go get a smoothie. Isabella ran to Phineas and greeted him. Phineas was pleased that such a good party host would greet him. At last, Vivian called to everyone; it was time for bratwursts (made by Doofenshmirtz. Given out by Vanessa.) Everyone cheered and ate. Root Beer was served as well. Dr. Doofenshmirtz got bored after 20 minutes then told Perry to go get "Monopoly" inside. When they played, Perry won. "Cruse you!" Doofenshmirtz said as Perry left. It was 4:45, good things had to come to an end. Everyone left sadly, but they had a good time. When the boys are walked home, Perry came along with them, back to his usual mindless platypus state. The End.