I do not own any characters.

Powerpuff girls belong to Cartoon Network and TMNT belongs to Nickelodeon

The city of Townsville, a city filled with wonder and excitement and the home of the Powerpuff girls…

It was a rare zero-crime Saturday morning at the Utonium household and the girls themselves were watching TV, while the Professor was working in his lab. The girls were only five and their names were Blossom, Bubbles and Buttercup. Blossom had long waist length orange hair that was decorated with a huge red bow on the top of her head. In the back she wore a heart-shaped hairclip. Blossom also had pink eyes that matched her pink dress. Bubbles had short blond hair that was kept in pigtails and light blue eyes that matched her dress. The last of the girls, Buttercup had short black hair and lime green eyes that matched her dress. While Blossom and Bubbles liked girly things, Buttercup didn't, which was why she hated their choice of a girly show.

"Ah man, this is boring." Buttercup complained, as Blossom and Bubbles were watching the cartoon featuring Ponies.

"Shh…" both Blossom and Bubbles replied before resuming watching the pony show.

Buttercup frowned and folded her arms. Buttercup didn't know how anyone could stand this show, she wished she could take her frustration on the next bad guy, she would face. Then almost as if the universe was responding to her thoughts, the girls heard a scream coming from the lab. Blossom, Bubbles and Buttercup flew towards the lab as they cried "Professor!" When they flew into the lab, they were greeted with the horrible site of the Professor in the arms of a creepy robot that was surrounded by a bunch of identical looking men with huge guns. At once the girls flew towards the men, wasting no time punching and kicking of all them. The weird men fired the guns at the girls, but the lasers did no harm to the power puff girls. As they fought the weird men, Blossom noticed something as they punched the men strange brain like aliens flew out of their bodies.

Blossom, Bubbles and Buttercup were taken back for a moment, before Blossom said "Don't them escape."

By the time defected the evil aliens, the Professor had been taken. Bubbles cried in a corner, while Blossom and Buttercup tried to integrate the alien

"Who are you?" Blossom ordered. "What are you?" Buttercup demanded. "…and what have you done with the Professor?" Blossom and Buttercup said at once. The pink alien brain said something in its strange alien language. While Blossom and Buttercup were unable to understand, Bubbles did. Whatever it said caused Bubbles to fly and reply "That's not very nice." The look of surprise on its face was priceless. "Man, I knew you can speak any language Bubbles, but this is taking to another level." Buttercup muttered. Bubbles began to speak to the creature in its language and the stunned creature repiled back.

"They call themselves 'the Kraang and that's all he'll tell me." Bubbles explained.

Not satisfied with just knowing the creature's name, Buttercup approached the creature and said "Let's try again."

Buttercup picked up the Kraang, her eyes glowing dangerously bright, ready burn the Kraang with her eyes beams as she demanded "What do you want with the Professor?" This time the Kraang was terrified enough to answer that question.

Bubbles turned to her sisters and said "He said that they want the professor's help in creating portals in other worlds so they can take over all worlds."

"What!" Blossom cried.

"Not gonna happen! Come on!" Buttercup declared.

With that the Powerpuff girls flew towards the portal the professor had been working on and began their journey to another world.

Meanwhile in a place called New York City, lived a family of mutants that lived underground. They consisted of a Mutant rat that was once human and four mutant teenage turtles. The oldest turtle was named Leonardo, or Leo for short, and he had dark blue eyes and a matching blue mask, the second oldest was named Raphael, or Raph as he preferred to be called, and he had green eyes and a red mask. The third turtle was named Donatello, a.k.a Donnie and he had reddish brown eyes. The last turtle was named Michelangelo or Mikey for short. He had baby blue eyes and an orange mask. At that moment they were getting ready to head out for patrol of New York City.

"Good luck my sons." called their Sensei, also known as Master Splinter, as he stepped out of the dojo to wish them luck.

"Thanks, Sensei." The turtles replied as they bowed to their father before leaving. With that the four brothers began to run towards the nearest man-hole ladder. Ever since the turtles went to the surface on their mutation day, they have made good friends, like April and Casey, dangerous enemies, like the foot clan and the Kraang and have seen unforgettable sights, such as an attempted alien invasion last year. Little did the turtles know that they went about to meet a group of girls that they would never forget. As the four brothers reached the surface, they saw a ball of light appearing in the sky.

"What's that?" Mikey wondered, as the light began to grow and expand until it looked like….

"It's a portal!" Donnie cried out in shock.

"Be on your guard!" Leo ordered. The four brothers had their weapons ready, as they prepared themselves to face whatever threat that would appear from that portal. However, what came out of that portal wasn't another Kraang invasion, but a group of three little girls, and they weren't just any normal little girls either. They were flying through the air and leaving behind a rainbow of blue, pink and green. The four brothers could only watch in awe as the girls flew past them.

Once they had gone, Mikey turned to his brothers and whispered "Did you see that?! Real life superheroes! This is so cool!"

"We can't trust them, Mikey. They could be with the foot for all we know." Raph repiled almost instantly.

"I don't know Raph; they seemed worried and upset about something." Mikey said, almost thoughtfully. "Yeah, worried about how Shred-head will kill them if they don't find us." Raph retorted.

"I don't think they were looking for us, Raph." Donnie reasoned. "They flew right past us. If they were really looking for us, they would've engaged us in a fight, by now." He added.

"If they weren't looking for us, then who were they looking for?" Mikey questioned.

"I don't know," Leo began. "But I do know one thing, we need to tell Master Splinter." He added.

With that the four brothers climbed back down the building and into the man hole. Sadly for the Powerpuff girls, the turtles weren't the only ones who saw them. Lots of people did including, April, Casey and the foot! When April frist saw the girls she called Casey right away.

When Casey answered his phone, April immediately said "Casey! Did you see that?!"

"Are you kidding me, Red?! THE WHOLE CITY OF NEW YORK SAW THAT!" Casey screeched with shock.

"The main question is, Are they good guys or bad guys?" April said thoughtfully as she stared at the sky.

At the foot headquarters, Karai still couldn't believe what she had seen! Little girls that could fly! What else where they capable of! Karai knew that only one group of creatures were responsible for this, the Kraang! She stormed towards the Kraang center and said "What did you do!?"

"One called "Karai"; the Kraang is lacking what is known as blame in the situation." One of the Kraang began to explain. "The Kraang were conducting tests and by chance the Kraang came across what was known as another world. The Kraang noticed that world wasn't connected to this world or Dimension X."

That caught Karai's attention.

A world that wasn't connected to their world or ours? This just suddenly got interesting. Karai thought to herself.

As Karai was plotting her move, Blossom, Bubbles and Buttercup had stopped to rest in central park.

"I don't believe this. First the professor is kidnapped by a bunch of creepy aliens and now we're stuck in this strange world with no way to get back home." Buttercup complained.

Bubbles fell to her knees and sobbed loudly "I miss dad, so much."

Blossom embraced her sister with a tight hug. "I know I miss him too."

"What could those evil aliens be doing to him?" Bubbles wondered aloud, shuddering at the thought.

"They better not hurt him; otherwise I'll knock them to other side of the universe." Buttercup promised.

As the girls were wondering how to find the Professor, meanwhile the turtles were telling Master Splinter what they had seen.

"You are so not going to believe this Sensei!" Mikey cried with joy in his voice.

"Don't get any ideas, Mikey." Raph interupted. "We don't know they're good or not." He added.

"But if they really wanted to hurt us, wouldn't they attack us soon as they saw us." Donnie spoke up.

"Boys, what are you talking about?" Splinter questioned.

"Master Splinter," Leo began. "During patrol, we saw something unbelievable." He continued.

"Leonardo, we live in a city filled with mutants and the Kraang. Not to mention we are a family of mutants ourselves. I assure you, Leonardo that not matter how strange your story sounds, and I promise I will believe you." Splinter said reassuringly.

Taking a deep breath, Leo started his tale again "When we reached the surface, a ball of light appeared in the sky. The four of us couldn't help but watch as the ball expanded into a portal. At first I thought it was the Kraang again, but instead of the Kraang coming out, three little girls, and I'm not kidding Sensei, they flew out of the portal!" Leo finished.

"Yeah and they white pupils over their black ones." Mikey added.

"That's impossible! There has to be a logical explanation for this." Donnie said out loud.

Splinter simply tugged at his bread as he thought over what his sons had told him. It appeared that those three girls were from another world and they had powers that no one had seen before. Then there was the matter of what to do next. On one hand, he didn't know what their intentions were, but on the other hand, he knew that the Kraang or the Foot would do everything in their power to capture them and brainwash them. Splinter knew he couldn't allow three small children to fall into the hands of those evil groups. There was only thing to do.

"Leonardo, I believe the best thing to do is wait until you run into these children again, however if you do, just speak to them. Ask them what their intentions are." Splinter advised.

"So, that's it! We're just going to wait until they attack us!" Raph exclaimed as he threw up his arms in disbelief.

"Raphael, do not forget. They are only children." Splinter repiled. "Most likely, they are looking for their parents." He added.

Meanwhile, in a place far away, Professor Utonium was sitting in a Kraang cell.He quickly learned that his captors were called the Kraang and that they planned to use his skills as a scientist to take over the world. All he could think about were his daughters; he knew they could take care of themselves. He just hoped they could find him and thwart this evil plot before it was too late.

Oh girls, where are you? The Professor thought to himself.

Well this is my first crossover, so please tell me what you think?

Did I keep everyone in character?

Read and review.