
They find out that the Tri-State Area in this dimension has been taken over by the 2nd Dimension Doofenshmirtz, who has a scar that goes over his eye-patch and has a massive army of hovering robots called the Norm Bots to enforce his reign. With the machine finally complete, Doofenshmirtz then successfully opens a portal to the 2nd Dimension and he and the boys step through it. Also, Phineas states that Ferb has built a remote control that will open a new portal in case the original one from the machine closes, to which Doofenshmirtz compliments, "Nice touch, kid." He tries to stop them by taking away the last piece to the -inator from Phineas and peeing on Doofenshmirtz's couch, but to no avail. Phineas, Ferb, Perry, Doofenshmirtz and the completed Other Dimension-inator.Īfter apologizing to Doof for the damages and finding the idea of traveling to alternate dimensions to be cool, Phineas and Ferb help him rebuild his Other Dimension-inator, much to the horror of an arriving Perry, who must pretend to be a mindless pet in the vicinity of his owners lest they find out his secret. She and the rest of the group go to the park to look for the boys. Candace concludes that the "Mysterious Force", the force that she believes takes away Phineas and Ferb's invention before her mother can see them, recognizes Candace as an adult, and so kept her from seeing the boys' invention as well. However, she finds that her brothers and the platy-pult are gone, with only Isabella and Baljeet remaining.

She and her friend Stacy go to the backyard to bust the boys, since, now that Candace is an “adult”, she can bust the boys herself. Meanwhile, after learning that her boyfriend, Jeremy, is looking for colleges, Candace decides to grow up and act more like an adult. Doofenshmirtz's latest invention, the Other-Dimension-Inator, which he designed to help him travel to alternate dimensions. While riding in his new rocket car, Agent P collides with Phineas and Ferb's shuttlecock that changes its course and crashes on the roof of the Doofenshmirtz Evil Incorporated headquarters, destroying Dr. Perry, who has assumed his secret agent role as Agent P, has returned from a mission briefing with Major Monogram and Carl the latter who has given him several new gadgets. With the help of their friends Isabella, Buford and Baljeet, they construct them, launch themselves off of the tail of the platypult in a large shuttlecock, and fly through the air. They then decide to play platypus badminton using two giant platypus-shaped catapults, which can launch objects off their tails like real platypuses. Subsequently, they play baseball, launching the balls off of Perry's tail. Afterwards, they fall down the stairs next to their parents and reminisce about when they adopted him from the Organization Without a Cool Acronym's animal shelter. The trio does various activities (such as get dressed, brush their teeth), while singing Everything's Better with Perry, a song about how everything is better with their pet. The scene switches to the beginning of the day, with Phineas and Ferb waking up due to Perry's chattering.

Phineas, Ferb and Perry wake up on a bright new morning. Phineas compares their current situation to how the day began and states that everything started out so well that morning.

Doofenshmirtz, who were all captured by several hovering robots, are about to be fed to a Goozim.
