"Wow, Ferb. This is such a boring day... What should we do? It seems like today, nothing is happening in the entire universe! Wait... THAT'S IT! I know what we're gonna do today!" Phineas Flynn said his catchphrase to his green-haired British stepbrother Ferb. "We're gonna make a device to travel to other universes!" Just then, their neighbor Isabella walked in looking as perky as ever.
"Hi Phineas" she said "Whatcha doin'?" she asked in catch phrase format.
"We're making a device to travel to other universes, dimensions, if you will" Phineas replied.
(ONE MONTAGE LATER)
"Well guys, where do you wanna go?" Phineas asked his brother, pet, and friend.
"What are you doing!" Phineas' sister, Candace asked angrily
"We're just gonna go to another dimension. Hmm... Land of Ooo..." Phineas answered, but quickly got distracted by his machine
"Oooohh" Everyone replied, because they just HAD to make that joke
Phineas rolled his eyes. "Well, wanna go to Ooo? It seems like a fun place" he added, watching the preview (Which happens to look exactly like the first part of the AT theme)
"Sure" Isabella replied.
"You're not going there without me! Mom left me in charge!" Candace said
"Did a satellite crash into the house?" Phineas asked
"Well, no, but..." Candace replied
"Then you're not in charge. But you're welcome to come anyway" Phineas shot down his sister's bossiness as he activated the portal and they all went through, including a nervous Perry.