Hello! Yeah so, I had this brilliant idea to write this story so... here it is. Just a few things to know:

I like a bunch of concepts from various versions of TMNT so, bear with me, okay?

So, this is based in the 2012 universe, but Donnie doesn't have a crush on April. Also, Casey will be in this, but he will be introduced a bit differently.

Oh, and don't ask about the name. I have no idea where that comes from...

~Chapter 1~

Being a teenager is an amazing time and a hard time. It's when you make your best friends. You get the best and the worst as a teen. You have the best friendships and the worst heartbreaks.~Sophia Bush

Deep in the sewers of New York, there lived a family. Yeah, yeah, yeah, I know. Weird: a family in the sewers. But, they weren't exactly, er... normal. They kinda were a family of mutants. Four reptiles and a rodent... Yeah, okay. That's weird, I know. Just, bear with me...

Their names were Isabella, Alessandra, Elizabeth, Cathrine, and Master Astilla. (A/N haha! You thought is was they guys, didn't you! No? Y-you saw that coming? Oh, okay then...) Or Izzy, Alice, Lizzie, and Katy. Those were their nicknames. You see, their names came straight out of Renaissance book that Astilla (It's Spanish, so pronounce it Ass-tea-ja) found in the sewer while looking for things her girls could use.

What? Oh yes, what animal are they mutated with, well let's see. Um... Astilla's a mouse yes, and the girls are lizards. Happy? Good.

Who am I? Are you crazy!? The story just started, I can't tell you who I am yet! I am but the humble narrator. Okay? Good, thank you.

So, back to the girls. They had all been mutated when they were fairly young, along with their Master. Now, they are 15, and they have been trained in the art of ninjitsu their entire lives by Astilla. Until one faithful day.

During August, the Shredder had been in the sewers looking for the turtles. He had found the girls lair and mistaken them for the turtles. He had brought them to his hideout and tried to experiment on them. The four girls escaped, but in their separate ways. Now, afraid to go to the hideout, go home, or even go to sleep, the four mutant lizards were trapped in the brutal sewer system of New York.

And that, I suppose, is where our story begins.

The four turtle boys, Leo; Raph; Mikey; and Donnie; were all in the sewers on an evening patrol, when a blood curdling screech pierced the usually quiet tunnels.

"Izzy!" The cry sounded desperate and fearful. "IZZY, HELP!"

Sensing the fear in the girl's cries, Leo motioned for his brothers to follow him while the cries for this 'Izzy' person continued. The turtles began to run faster until they came upon something they didn't expect to see.

On the ground, was a young mutant lizard. She was about as tall as the boys, with a belt strap going around her waist and one going from her right shoulder to her left hip. Tucked in her belt were two boomerangs. She wore a yellow mask and had black hair that came down into two braids and was soaked with blood and tears. She was caught in a net that was pinned to the ground, pinning her on her back. She continued to cry as she screamed once more.

"Izzy! Alice, Katy! Help!" She called desperately. Leo turned to his brothers who all nodded.

Raph and Donnie stood in front of them to guard them while Leo got down to help her. Leo cut away the ropes and Mikey helped her sit up.

"W-who are you? The lean green fighting machines?" She joked while still shaking. The two turtles stared at her before Mikey burst out laughing. The lizard giggled a bit while Leo just stared at him.

Mikey saw Leo's look and stopped with a simple, "Sorry."

"What are you?" Leo asked as politely as a person could ask that question.

"I'm a lizard." She answered, flicking her tail side to side.

"Mind telling us why you were under that-"

"Hey guys?" Donnie interrupted. "Can we do this somewhere where we don't have to guard you?"

Leo nodded before turning back to the female mutant. "We'll take you to our lair. Can you walk?"

"Sure." She replied bubbly. She began to get up, but stumbled forward only for Mikey to catch her. "I can't walk."

"Mikey, can you carry her home?"

Mikey nodded. "M'lady." He said grabbing her hand. She giggled as her put her arm over his head. He used his other arm to grab under her knees and pick her up bridal style.

"Come on guys." Leo ordered.

"Are you crazy?" Raph asked, stopping Leo in his tracks."We're just gonna bring a totally random mutant we found in the sewers to our lair!? What if she's a spy? What if she tells Shredder where we live!? Do you remember what happen with Leatherhead?"

"How about we have her close her eyes on the way there so she won't know where we live?" Leo suggested. Raph huffed but gave up.

"Hey," Michelangelo asked the girl in his arms. "Can you-" he stopped when he noticed the girl had fallen asleep in his arms. "I don't think she's gonna be able to tell where we went, Raph."

"Are you crazy!?" Master Splinter demanded of his sons. "She may be a spy. We cannot let just anyone in our layer. Remember what happen with Leatherhead."

"But Sensei," Leo started, trying to appeal to Master Splinter's god side. "She was hurt and scared. Besides, she fell asleep on the way here and she seems trustworthy."

"Yeah, and she's really funny!" Mikey added.

His brothers glanced at him, then back at their Sensei. He stroked his beard before sighing and saying, "She may stay tonight, but in the morning I shall see if she can be trusted."

End of chapter one! Also, I'm doing this thing that I'm hoping will be helpful to some of you.

So, ya know how you'll see one of the stories you Favorited/followed has been updated, so you click on it and then you're like 'crap, what's this story about and what happened in the last chapter.'

Well, instead of making you go back and read the last chapter (or sometimes even last 2 or 3) I'm gonna write 'Previously on When the Rain Falls' and then tell you the main things that happened.

If that doesn't happen to you, you can just skip the beginning of every chapter.

Thanks. Oh, and don't forget to review!