We're back on chapter 5.

WARNING: I DO NOT OWN TMNT AND KIM POSSIBLE OR ANY OF THE CHARACTERS.

At the sewers, the heroes made it back to the lair. However, Kim, Ron and Rufus looked around the lair.

"This is it. Our lair." Leonardo said.

"I had no idea you guys live in a sewer." Kim said.

"Yeah, but it's home." Mikey said.

"This is cool." Ron said.

"Thanks." Donatello said.

"So, Ron, what's with the naked mole-rat?" Casey asked.

"He's my best friend." Ron said before Rufus nodded in agreement.

"That's cool. I wish I had a naked mole-rat." Mikey said.

"Can I ask you something?" KP asked April.

"Sure." April said.

"Don't answer if you don't feel like it." Kim said. "But how did you have those mental powers?"

"Being a part of an experimented family on my mother's side made me mutant human/Kraang hybrid." April said.

"Whoa. Kraang?" Ron was surprised. "Those squishy alien brain things on robot stomachs?"

"Yeah, we've been foiling their plans to invade the Earth all the time." Donnie said.

"And they're the ones who made the mutagen?" Kim asked.

"They tried to use that to turn Earth into another Dimension X. Dimension X is their home world." Leo said.

Master Splinter and his daughter Miwa, commonly known as Karai, walked out and saw Kim and Ron.

"May I ask why you have brought two strangers here?" Splinter asked bluntly.

"Hey, I know them. That's Kim Possible and Ron Stoppable. They're super spies." Karai said.

Kim bowed her head to Splinter. "Pleasure to meet you, Master Splinter."

"So, you are the one who always saves the world. Michelangelo has told me so much about your adventures." Splinter said.

"Well, it's a hobby." Kim said.

"I suppose you have assisted my sons, young Kimberly." Splinter said.

"We did. One of my villains, Dr. Drakken came here, and whatever he's planning, it's my job to stop him." Kim said.

"Shredder." Splinter said in realization. "This Drakken's joined forces with him."

"We have to stop him." Karai said determination. "Shredder's gonna pay for what he did to me."

"Miwa. Remember, revenge is a dark path." Splinter said before turning to Kim. "Miss Possible, this is my daughter, Miwa."

"Call me Karai."

"It's a name Shredder picked for her when he stole her." Raphael said. "Raised her, as like."

"Hey, Raph." Leo said.

"It's true." Raph said.

"Wait, YOU? You were a member of the Foot?" Kim was surprised.

"How did it all happen?" Ron asked.

Splinter sighed as he was about to tell his story.

"It's a sad story. "Oroku Saki and I were brothers, friends a long time ago. But that changed when we met Tang Shen. She loved me as much as I loved her. Saki's jealousy overcomes within. We had our only daughter Miwa. We were very happy until darkness strikes. Jealously and anger helped Saki learned of his biological father Oroku Kenji, the leader of the Foot Clan. He rebuilt the clan, calling himself the Shredder. That night… he killed the woman I loved, and took my daughter from me,"

It was Karai's turn.

"Shredder raised me, lying to me about everything, letting me believe Splinter was responsible. When I found out the truth, I vowed revenge on him. But, it causes more pain. I fell into mutagen and become this."

Karai morphed into a snake, shocking Kim, Ron and Rufus.

"You're… a snake mutant." Ron said.

"She slithered away, but eventually, we found her." Leonardo said. "The retro-mutagen didn't work on a special mutant like her."

"Retro-what?" Ron asked.

"De-mutates mutants. Donnie made it to turn my father back into human when he was mutated into a bat." April said. "That one's a long story."

"Anyway, I've been hiding here ever since." Karai said, shedding a tear. "Shredder turned me into a monster. His lies cost me… my humanity."

Kim walked to Karai and placed her hand on her shoulder to comfort her.

"What kind of man do such a thing?" Ron wondered.

"That's no man. He's a monster." Kim said, knowing what the Shredder had done to the Hamato family, and Karai. "We've got to do something."

"Now, Kim, there's no need to rush things. We'll need more time to fight against Shredder and this Drakken." Splinter said. "What were the Foot doing?"

"They were packaging mutagen from the Kraang." Donatello said.

"And Raph jumped off before we could find out what Shredder was up to." Leonardo said.

"I only wanted to kick butt." Raphael said.

"Well, KP, looks like we've got two Shegos." Ron said.

"So, what are you saying? She's like me?" Raph asked.

"An explosive temper, and is known to react with violence." Kim described Shego.

"Sarcastic, tough, seductive, and condescending towards almost everyone in her life." Ron said.

"Sarcastic, tough, hot headed. That's Raph to a T." Mikey said.

Raph was stunned to be compared with Shego. "Uh… Okay, moving on."

"We need to find out Shredder and Drakken's next move." Donnie said. "I placed a Spy-Roach on Rocksteady."

"Spy-what?" Rufus asked.

"Spy cockroach. Come one, dude, that's obvious." Donatello said.

"We'll be able to learn their move." Leonardo said.

"I say, we bait a trap." Mikey said.

The heroes looked confused.

"And how the bloody hell do we do that?" Raphael asked.

"Easy, Raph. We use you to bait Shego. If we capture her, April can use her powers to enter her mind and find out what are Shredder and Drakken up to."

"Not bad." Ron said.

"Not bad." Rufus agreed.

"Are you three the only stupid people in this lair?" Raph snapped. "That's the most idiotic plan I have ever heard."

"Boy, an explosive temper like Shego is right." Kim said.

"Kim, I could tell you stories." Leo said.

"Why would that green flaming freak be after me anyway?" Raph wondered. "She's not Karai."

"Oy, still here." Karai said. "Besides, if you call her freak in front of her, you'll have fire burn from her. Believe me, I learned about her in the news."

"I like smoking, hot, green babes." Casey said flirtingly.

"Casey." the turtles, April, Kim, Ron, and Rufus said in union.

"Master Splinter, what do we do?" April asked.

"Have patience. Donatello's Spy-Roach is with the enemy. We'll have to learn the Shredder and Dr. Drakken's next move."

"I'll call a friend of ours." Wade said. "You should like him."

Kim picked up her Kimmunicator to call Wade.

"Hey, Wade. The rumours are true. Drakken's working with the Foot Clan." Kim said. "We've got four mutant ninja turtles on our side."

"They're names are Leonardo, Raphael, Donatello, and the orange one's Michelangelo." Ron said.

Wade saw the turtles, and Mikey waved at him.

"Call me Mikey." Michelangelo said.

"Hi. Name's Wade." Wade introduced himself. "What is Drakken's up to with the Foot?"

"He's collecting mutagen from aliens from another dimension called the Kraang." Kim said.

"This is getting serious." Wade said.

"That's right, Wade. We're at a war." KP said.

Chapter 6 is coming soon.