The rift opened overhead, and Candace, Baljeet, Buford and Isabella dropped into existence behind Phineas.

"Hi, guys!" Phineas exclaimed, relief showing all over his face. "So good to see you!"

Isabella looked at him and gasped. "Huh?!" A flow of memories rushed through her head, reminding her of the love she had for the boy of her dreams. "Phineas!"

Dunneladunneladunneladunneladunneladunnela—HAAA-AAH-AH-AHHH, AHH, AH-AHH!

"Hi, Phineas," blushed Isabella.

Baljeet looked down at the ground and gasped. "Spoon!"

Dunneladunneladunneladunneladunneladunnela—HAAA-AAH-AH-AHHH, AHH, AH-AHH!

"Oh, how I have missed spoons," Baljeet said, hugging his spoon.

Buford looked at the object lying next to him. "Orange," he said, inspecting it closely. "Eh, not really getting a big rush of emotions over this."

"And here are the Capri pants," Candace pointed out.

Buford gasped. "Capris!"

Dunneladunneladunneladunneladunneladunnela—HAAA-AAH-AH-AHHH, AHH, AH-AHH!

The bully glanced up from the pair of Capris he was holding tightly. "What?" he asked, noticing the others' suspicious looks. "Can't a guy appreciate the rare moments where fashion meets convenience?"

How Last Day of Summer Should Have Ended

Candace's phone rang. "Sorry, Stacy," Candace hurriedly answered, already knowing who it was and why she was calling. "I know it's the last day of summer, but we can't hang out right now. Vanessa's dad—did you know he's a pharmacist?—made a machine thingy that made me re-do the day and now I get a second chance to bust my brothers and I don't have time to hang out because I need to take advantage of this opportunity while I still can and nachos."

"But I wanna be in the finale," whined Stacy.

"Oh, there they are!" Candace interrupted, looking out the window at the ride Phineas and Ferb were making. "Gotta go, bye!"

Stacy gave her phone a suspicious look. "Did she say something about a machine built by a pharmacist?" she asked aloud. "It might be nothing, but I better double-check with Perry."

One scene wipe later…

"And she said something about being affected by a pharmacist's machine," Stacy finished explaining to Perry, who stood before her crowned with his fedora. "Just thought you might want to know. Also, it seemed like she knew exactly what I was going to say before I said it. It's like she's stuck in a time loop, or something."

The platypus's paw was massaging his duck-beak in thought, recreating what he saw and heard while eating breakfast that morning. "Looks like the zoo's got a new tiger habitat," Linda mentioned. Lawrence growled in response while Candace wheeled into the dining room on a wagon. "Morning, Candace."

"Mm-hm," was all she received in return. "And so begins the last day of summer—again!" She pointed at Perry. "Which means back-to-school errands for me, and making the most of the day for you!" Both women said it in sync. "Hey!"

Candace stood with renewed vigor. "This is amazing; today is exactly the same as yesterday! It's repeating!"

The secret agent gasped in realization. Without another word, he blasted off for Doofenshmirtz's.

One more scene wipe later…

Perry crashed out of the drum, broke his way out of the skull, and was ferris-wheeled into a steel cage.

"Haha! I can see by the confused and somewhat annoyed look on your face that your little mammal brain is working overtime trying to figure out how I anticipated your every move," Doofenshmirtz said. "Not to mention, the purpose of this hamster ball. Well, it's simple. See, this protects me from when you eventually escape from that; like that! But you can't punch, kick, or otherwise bruise me, because I'm safe inside my—wait, Perry the Platypus, where are you going?"

Agent P inspected the Tri-Governor-Inator and moved past it.

"Hello, Perry the Platypus? I'm over here!"

Paying no heed, the secret agent spotted the Do-Over-Inator lying in plain sight and pressed the self-destruct button.

Stacy, who was watching nearby, soliloquized, "Man, it sure was a good thing I learned Perry's secret so we could do stuff like this, am I right?"

OR…

The gang crashed through the rift into the backyard while the Do-Over-Inator bounced across the lawn. "Is everyone okay?" Phineas asked.

"Aww," sounded Buford, "my muffins got smashed."

Candace jumped up and ran for the Do-Over-Inator. "C'mon, no time to lose! Literally!"

Everyone gathered around the device. "Okay, Baljeet, just to confirm; destroying the machine will put the space-time continuum back to normal."

"Yes. But we need to do it quickly. The time loops are accelerating exponentially—"

Time looped, and the gang crashed into the backyard again.

"Oh man," Buford said, pushing himself up. "That was quick."

"The days must be compressing to this exact moment!" Phineas exclaimed.

"Wait a second," Candace said, stopping. "I thought I was the only one outside the time loop?"

Time looped, and the gang crashed into the backyard again.

"The time loop is getting too short!" Phineas cried in exasperation. "We can't reach it, there's just not enough time! Oh, now I really wish we'd built a giant, floating theme park in the sky for today's project instead!"

But this is really how it should have ended…

Candace sighed guiltily and explained herself. "When I was at Vanessa's, I may have accidentally/intentionally pushed the button." Everyone but Ferb gasped.

"Okay, I was having a rotten day—one crummy thing after another kept happening, and when he told me that this thing could make the day start over again, I just couldn't help myself. And then the days just kept looping and I know I should have said something sooner but I kept coming so close to busting you guys! And I swear I had no idea it would do any of this. I thought I got one do-over, and that would be that, then I saw it was creating problems and making things disappear and making people forget about it and by the time I was trying to stop it it was too late and I lost you guys! And I don't know how to fix it! And I know it's a special extended episode and Phineas always yells at me in those, so I—"

"GET ON THE TRIKE!" shouted Phineas angrily, for no apparent reason.

"See, just like that."

Buford pulled the Inator closer. "Well, if this thing's the problem, maybe we should push this big self-destruct button."

"No!" Baljeet slammed the lid shut. "If time stops looping, there will be no big tears in the fabric of space-time, and no way for us to get home! We must find a way to get ourselves—and the machine—through one of the rifts and back into Danville. Then we can push the button and blow up the machine."

"I call pressing the button," Buford announced.

"Come on, gang, we know what we have to do today," Phineas said. "Or, should I say, we know what we have to do-over today, with this machine—we'll use it the same way Candace did to do-over today, and go over to Vanessa's dad's first thing this morning to destroy it!"

"Agreed," everyone said.

"That sounds way better than running from these tigers," Buford added, as he pushed the little square button opposite the self-destruct button.

A bubble in the pocket of the space-time continuum formed around the gang.

"Hey, Baljeet," Phineas asked, "just out of curiosity, when we wake up, how much time will we have before time loops again?"

"Oh, plenty," said the Indian boy with a cursory wave of his hand. "Like, at least enough to build a catapult, if we wanted."

Time looped, and everyone woke up in their beds in Danville. Within minutes, six hoverboards had arrived at the top floor of Doofenshmirtz Evil Incorporated, and the kids destroyed the machine while Candace explained the whole thing to Vanessa and her father.

And everyone lived happily ever after.

...

Doofenshmirtz saw the error in his ways and defected to good, choosing to become a high school science teacher. Phineas and Ferb became his favorite students.

...

Candace, also seeing the error of her ways, decided to give up busting. She now enjoys jig-saw puzzles and playing Canasta with her friends.

...

Perry was able to enjoy an early retirement and spent the rest of his days in peace, with his family. Stacy is still the only one who knows his secret.

...

Baljeet graduated college early and became a professor. Buford still gives him occasional wedgies.

...

Vanessa decided working at OWCA wasn't for her when she fell in love with Ferb. After receiving a substantial inheritance from Charlene, there was no need for either of them to work ever again, so now they travel the world seeking adventure.

...

For a heart-wrenching ten teen years, Isabella and Phineas inexplicably never once asked each other out. They got all sad and sang a song about it, then started dating in college.

...

Dan Povenmire and Jeff 'Swampy' Marsh were so successful with their rockin' new show, Mikey Murphy's Law, that Disney begged them to do a fifth season of Phineas and Ferb and that live action movie they'd always talked about. They did, and it blew all our minds.

The End!

Thanks for reading! If you liked, be sure to favorite, follow, and most importantly, review! All onomatopoeias are credited to The WGPM, and I do not own Phineas and Ferb or How It Should Have Ended!