Author Note: This story is based off of the picture "Family" drawn by 'yinller' from Deviantart. If you search on google "yinller tmnt family" it should be the first picture. I would actually use the picture for the story, but since I didn't draw the picture and I don't have a Deviantart account to ask yinller if I can use the picture, I'm going to play it safe. Unless you guys know for a 100% I can use it or something…
Disclaimer: Turtles aren't mine, but I have created this AU based off of yinller's picture. If there is any other story with this type of universe, it is just a coincidence.
Prologue
Years ago, an alien race was working on a chemical that could somehow connect humans with their planet better. The aliens feared that the lifeforms would destroy their planet and decided this would help. Even though some have been working on the chemical, or mutagen as they call it, some of the aliens believed they should not interfere and let the lifeforms suffer the consequences. Unfortunately, fate made the choice for them. An accident occurred in space, causing the aliens to evacuate their spaceship; however, they had no time to retrieve their mutagen. Due to the many meteors in space, as well as no one taking care of the ship, it was destroyed and the mutagen fell to the Earth like rain. The mutagen has change all the humans on Earth, causing them to become part of the other lifeforms, the animals.
The humans, of course, did not understand how the green rain came or why it came. However, they continued to live their life, animals and humans becoming one. The aliens never interfered after that, believing the mutants on Earth were now on the right path. Some of the aliens also did not want to change the planet anymore than they already have.
Little did the aliens know how much evil could be in one being on that one planet. And that, is where our story takes place.
