Hi everybody! did ya miss me? well I'm back and boy do I have a story for you! I wrote this with my very good friend AVP5, and we hope you guys like it, everything you need to know about the story is in the description I'm not revealing anything. Me and AVP5 don't own Ninja Turtles, (but we wish we did) I only own my OC Caitlin and AVP5 owns Chris another OC who will show up in later chapters. Well what are you guys waiting for? read, review, enjoy!

One: Mystery ninja girl

Darkness. There was nothing but darkness surrounding me. How did all of this happen? just six months ago my life made sense I knew who my enemies were and who I could trust. But then everything went downhill so fast, that I'm not really sure what to believe in anymore. I was falling through the air, waiting to meet my fate until I felt someone wrap their arms around me and hold me close. I looked up and saw it was him. ''W-what are you-'' it's gonna be okay Caitlin'' he said giving me a small smile. ''N-no I'm not gonna…'' ''Caitlin!'' darkness. Nothing but darkness.

Six months earlier...

Another night in the city of New York. People walking through streets minding their own business. Not paying attention to what was happening right above them. Four shadows were racing across the rooftops, but if you looked closely you could actually see who they were. They were the Ninja Turtles.

Good thing New Yorkers never look up.

There was Leonardo, Leo, the blue masked turtle, leader of the group, and fought with the twin Katanas, Donatello, Donnie, the purple masked turtle who was a genius he could build and fix anything you could think of and fought with a Bo staff, Michelangelo, Mikey, the orange masked turtle who had a wild side, but was always fun to be around he fought with Nun-chucks and lastly there was Raphael, Raph, the red masked turtle who was a bit of a hothead but always protected his brothers from danger and fought with a pair of Sais.

They were mutants, misunderstood by society, but had always stuck to the shadows, and had sworn to protect the city from crime and their enemies no matter what the cost.

The four of them were on their nightly patrol but all seemed quiet and there was no danger in sight.

''Well guys'' Leo said stopping at the next rooftop, ''I guess we should call it a night''. The others nodded and they started to head back not realizing that not that far away, someone was watching them. ''You know what to do''.

Meanwhile, the turtles raced home. Mikey was talking about his new video game and pizza, Raph rolled his eyes and Donnie shook his head at his little brother. They were almost home when Leo stopped them again.

''Leo what...'' ''quiet I hear something'' they paused for a moment and they slowly took out their weapons suddenly, the Foot appeared behind them.

''Foot Bots!'' Leo shouted, the Foot Bots were the new gadgets of their enemies the Kraang , the evil alien race that had tried to invade Earth. They and had teamed up with their most hated enemy the Shredder, not that long ago, and had made these robotic soldiers for him.

Raph tightened his grip on his Sais as he glared at the Foot Bots ''get e'm!'' he charged head on into the fight with Leo, Donnie, and Mikey right behind him. They fought them off left and right and all of them were taken down in a matter of seconds.

''Well that was easy'' said Raph trying to catch his breath, Leo nodded but he had a bad feeling, ''maybe a little too easy'' And of course Leo was right. Just then another ninja appeared in front of them. And it wasn't a Foot Bot.

''Uh guys who the heck is that?'' asked Donnie, but no one answered him because they weren't sure either. Raph glared at the ninja, ''alright you what do you want?'' the ninja didn't answer, just motioned for him to come at him. ''Alright then''

''Raph wait!''

Raph ignored Leo's orders and charged at the ninja and started fighting, but the ninja blocked all of his attacks. The ninja eventually grabbed his arm and flipped him over the his shoulder.

''Raph!'' Donnie shouted and glared at the ninja he went to attack next but the ninja grabbed his staff and broke it in two. ''Aww come on!'' Donnie was so mad about his staff, that he didn't see the punch coming, knocking him out.

It was two against one now. Mikey swung his Kusarigama chain and tried to trap the ninja, but he grabbed the chain and threw Mikey into a wall. Now, it was just the ninja and Leo.

Leo glared at the ninja as it took out a sword. ''Hmm interesting that you would take out a weapon now''.

The ninja said nothing.

''You think I'm a challenge?''

The ninja slowly nodded.

Leo smirked and charged at the ninja. The two started fighting. It seemed that they could read each other's minds. When Leo would block, so would the ninja, and when Leo went to punch and kick, the ninja did the same. The two were so in sync that the fight seemed to go on for forever. Until Leo caught the ninja off guard and knocked the sword out of his hands and knocked the ninja down to the ground. The ninja struggled, but Leo held his sword to the ninja's neck and the ninja froze in fear.

''Nice job fearless'' said Raph. He was helping Donnie up and Mikey sat up and groaned, rubbing his head. The four stared at the ninja, ''now let's see who this crazy ninja is'' Donnie knelt down next to the ninja and took off his mask.

And they were all shocked at what they saw.

The ninja wasn't a he, it was a girl. She had brown hair that came up to her shoulders, three piercings on her right ear, and she had the most beautiful eyes, one green the other purple, and also looked to be about a year younger than the turtles. She glared at them realizing her cover was blown.

''Aww damn it!'' Leo took his sword away from her neck as the ninja girl slowly got up.

''Who are you?'' Leo said sternly the ninja girl glared at them, ''someone you should't have messed with''. Before, they could stop her, she sprayed them with blinding powder ''hey!'' the turtles coughed and wheezed as the ninja girl grabbed her sword and made her escape ''this isn't over turtles!'' she said as she disappeared into the night.