It was another Summer day as Perry along with Phimeas and Ferb were playing in the backyard playing baseball but hoped Platyborg was okay and not causing mischief after what he did to Danville Mall but his boys had fixed the damage, hearing laughter.
"Where is that coming from?" Phimeas asked.
"We should check it out." Perry told them.
They saw three little ten year old Platyborgs, as Perry sighed knowing they were Platyborg's.
"They're Platyborgs.
The two girls are Ami and Yumi and the boy that looks like Platyborg is Kero." Perry told them.
"Hey Uncle Perry!" Ami said as Phineas was curious.
"Aw they're cute!" Phineas said.
Ami then shot out blasts from her glowing right eye like het Dad laughing as Yumi high fived her but Kero helped him up.
"Sorry about Ami, she's always been like that." he told Phineas.
"I thought you guys were getting adopted." Perry said folding his arms around his chest.
"We don"t want to get adopted, we wanna stay with Daddy!" Yumi said as Perry sighed.
"You have to go back, you guys promised your Dad and AJ." he told them.
"You see they were with their Dad but now they're old enough, they're ready to go through agent training I hope." Perry told him and Ferb.
"You guys should go back as your Dad would want you to be agents." Phineas said as Kero agreed.
"He is right, Daddy would want us to be agents." he told his sisters.
"Yeah, right!" Ami said as she was angry.
Yumi and Kero saw her deploy her wings leaving as Perry was worried knowing if Ami wouldn't listen to them, the headstrong female Platyborg would listen to her father.
"Stay here guys, I'm gonna get P-Borg." he said as Kero and Yumi were hanging out with Pjineas and Ferb but having fun as Candace was stunned seeing them.
"I hope Dad can talk sense into Ami or she could use her powers to cause mischief especially her imagination power." Yumi said.
"What do you mean?" Phineas asked.
"Ami has this power that makes whatever she imagines real meaning she might fo something craxy." Kero told him.
They then saw Loki making Phineas stunned.
"Ami really likes Tbe Avengers and always wanted to be one so it's her way of living the dream." Yumi told them seeing Ami fighting Loki and causing damage.
"Ami Platyborg!" Platyborg scolded making her gulp.
"Hi Daddy!" she said.
"Stop okay?
Uncle Perry told me what you've been up to." he said.
Ami sighed making Loki vanish.
"Let's go guys." Perry said.