A/N

I felt like writing an new PnF story since I'm helping somebody with theirs plus watching an new ep involving Doofy being Vanessa's science teacher gave me ideas.

In this story, it's about Perry's Platypups that he adopted and their adventures plus Platyborg's kids are their best friends and Doofy is their uncle.

I hope you guys like.

It was now Spring in Danville but in the Flynn-Fletcher house, three platypus youngsters whom were the adopted kids of Perry but they were agents in training plus helped Phineas and Ferb with their fun and inventions, plus they were friends with Ami, Kero and Yumi who were Platyborg's kids.

Two of them were girls and one was a boy, but we're being mischievous since they were four years old but woukd be starting pre-school in a few days but normally hung out with Uncle Doof, plus loved watching him and their Dad fight.

"Migo, Yugo, you sure this is a good idea?

Daddy was up all night, with Uncle Platyborg." Luna said to her siblings.

"Phineas said wake him up, right?" Yugo told her as her brother Migo agreed.

Luna sighed watching her brother and twin sister jump on their father's bed as Perry groaned, sitting up as Luna sighed because she knew their father didn't like that.

"It was their idea Daddy!" Luna said pointing at her brother and twin sister.

"Phineas said, we had to wake you up!" Migo told him as Perry sighed.

"Okay since after breakfast, you guys are going to Uncle Doof's." Perry told them going downstairs as the Platypups slid down the banister landing on their webbed feet.

"Nice one!" Perry told them, knowing that Phineas had taught them that.

They were having breakfast but the kids were being mischievous which Perry wasn't in the mood for as he had to go to work but

"Let's do this, guys." Ami said to her siblings and her cousins.

They were at Doof's apartment as both their fathers were at work plus both Doofy and Alt Doof from the 2nd dimension were their uncles.

They were hungry but saw cookies in the kitchen.

"You think we can do this, guys?" Luna asked scared.

Kero and Yumi nodded as they pulled this stuff on their uncle all the time in the 2nd dimension"

Ami saw that Doof was distracted fighting Perry so was getting the cookie jar after deploying her wings and did a barrel roll making her siblings and their cousins impressed.

"Yeah, go Ami!" Migo cheered as they were eating cookies.

Doof and Perry heard sounds of belching as they found the Platypups eating cookies making Doof chuckle at their mischief but Perry knew this normally happened.

"You guys are gonna spoil your lunch, you know?" Perry told them.

"It's fine, as they'll wear themselves out plus it's a snack, Perry." Doof told him.

Ami nodded but saw her cousins playing with some of Doof's stuff as Perry was leaving but knew his and Platyborg's kids would tire Doof out.