"Ferb, last night's date with Isabella was alright and all, but I don't think I'm ready for a relationship," Phineas told his brother that morning. Ferb opened his mouth, but Candace looked up to give an explanation. "Love makes you do stupid things, Phineas. Remember everything I've done for Jeremy?" she stated. Phineas nodded, took a second to be embarrassed, and then asked where Perry was.
"Ah, good morning, Agent P. Doofenshmirtz has been researching something… well… Carl, did we remember to research what Doofenshmirtz was researching?" Major Monogram asked. Carl gasped, and checked up. "No, we didn't, sir. He's not using a computer to research," he called. Major Monogram looked at Perry again, and then said, "Just put a stop to Doofenshmirtz the only way you know how."
Monty Monogram had no clue what happened. One minute he was getting along fine with Vanessa, the next he seemed to be completely lost. He simply waltzed off.
When Phineas, Ferb, and Isabella walked into the school, Ferb noticed Vanessa crying her eyes out. Isabella noticed it a split second later, and then told Ferb to go comfort her. Ferb nodded, and then went over. Phineas asked Isabella why she told Ferb to do it, and Isabella rolled her eyes. "Remember when we chased the sun, and we stopped in Paris? YOU mentioned Ferb getting together with Vanessa. And it took you HOW LONG to notice me?" she asked. Phineas remembered, and nodded.
"Ah, Perry the Platypus. Why don't you have a seat?" Dr Doofenshmirtz called to Perry as he busted down his door again. The seat had little cuffs for the hands and feet. Doofenshmirtz has been going dumber with trap design… Perry missed when the traps were funny. "Anyway, sorry about the trap, you know, we've had budget cuts. Charlene hasn't paid her alimony recently. So BEHOLD! THE LOST-LOVE INATOR! All I have to do is fire this beam at somebody, and they will lose their most recent crush. Just keep firing it at Vanessa until Charlene coughs up. I know, genius, isn't it..." "I thought you already did this evil scheme." "Shut up, Norm. You're lucky I'm not confiscating your squirrels." "That hurt."
Ferb put a comforting hand on Vanessa's leg. "Thank you… Ferb? Why are you here?" Ferb opened his mouth, but that was all Vanessa needed. "Well, thanks Ferb. You're definitely one of the best. If I were younger… or you were older…" "Hey Ferb, I know what we should do today!" someone said over Vanessa's shoulder. Both Ferb and Vanessa turned to see Isabella standing there.
"Ferb, you and Phineas always made the greatest inventions all summer. Now do one for Vanessa," she said. Not unkindly, but it was hinted that she would be on his case. Not like Ferb was going to do much different. Phineas walked by, and asked, "Whatcha doin'?" Isabella giggled, and told him simply, "Ferb's big idea was to make a device to assist Vanessa with her little wish. You got any plans for age-modification?" "Well, yeah, Isabella. Vanessa, which way do you want to go?" Phineas noted. Vanessa thought about it, and said simply, "I'll tell you later. I'm going to go ask around some of the older guys for their opinions."
Perry got out of his trap with a flick of his tail, and knocked Doofenshmirtz into his inator. Perry flew into the control pit, and hit random buttons. The first fired a beam, the second made the machine lose its sense of stability, and the third blew it up before it defied the sense of what was going on. "CURSE YOU, PERRY THE PLATYPUS!" Dr Doofenshmirtz cried, and Perry pointed to his ears. "Too loud?" Dr Doofenshmirtz asked, and Perry nodded. Perry jumped onto the computer, and did a little key-mashing.
"Vanessa, you're planning WHAT NOW?" Candace asked. "I told you, Phineas and Ferb are making a device that will equalise my age with Ferb's. I want your advice: which way should I go?" Vanessa told her. Candace thought it over, and then decided, "Younger. Don't waste Ferb's childhood." "Thanks for the opinion, Candace."
Vanessa next asked Jeremy. "Vanessa, I'll go with older. The younger years of romance aren't the best, and you two might want to jump the shark a little. Especially since Ferb says like one thing every day," he voiced. Vanessa nodded, and then went back to Phineas.
"OK, Phineas. My decision is… younger. I want our little bond to mature more… through childhood," Vanessa said. Phineas nodded, and Isabella said, "Following in my footsteps? Hope you have better luck." Phineas started on his blueprint planning.
"MOM! Phineas is equalising Ferb's age with Vanessa's!" Candace yelled. "Not now, Candace. I'm having a coffee with Mrs Garcia-Shapiro," Linda told Candace from the other end of the receiver. "Mom, is it really that difficult to quickly check something across the street?" Candace yelled. "Yes it is, Candace," Linda told her. She hung up, then sighed. "You better hope Isabella doesn't turn out like her," she told Vivian.
"OK, Vanessa, we've got the rewind formula right here," Phineas said. "That's it? A formula? Dad could undo this in his sleep," Vanessa replied. "Ferb can be kinda chatty when he wants to. We know all about your dad… or at least, what Ferb has picked up. Phineas put in a couple of preservatives into the mix. The only way you can return to your proper age is naturally," Isabella told her. "Really? Well, here goes," Vanessa said, and downed the mixture in one gulp.
"I got your message, Heinz. Sorry I forgot to pay the alimony," Charlene said as she walked in. Doofenshmirtz chuckled, and took the payment. "Wait… I never… Perry the Platypus, did you do this?" Doofenshmirtz asked. Perry nodded, and then flew off. "Dad, I'm home," Vanessa called. "Oh, hi, Vanessa! We'll be down shortly. We just have to actually get there," Doofenshmirtz and Charlene called in unison.