Disclaimer: I do not own the Vampire Diaries or Supernatural

I don't know why, but I've always wanted to write a Vampire Diaries and Supernatural story... and to be totally honest, I just had a story idea pop into my head, but where this story goes is still yet to be decided.

~VDS~

Katherine Pierce smirked as she leaned down, applying more pressure, and shoving her hand deeper into Elena Gilbert's chest. After a year of suffering at the hands of Elena – losing Stefan and Damon to her, as well as having to listen to how everyone loved and worshipped her – Katherine was finally going to end her. Everything would be over.

Katherine was going to rip out her irritating doppelgänger's heart.

"K-Katherine…" Elena gasped in pain as she weakly tried to pull Katherine's hand from her chest.

The sight of her pathetic doppelgänger struggling uselessly against her was satisfying and only made Katherine that much happier. She was going to come out on top for once. She was feeling victorious, and nothing could stop her.

"Bye-bye, little girl," Katherine sneered. Finally, this was it – this was the moment. She was close to ending everything. Her hand was about to curl around Elena's heart, so she could pull it right out from its chest cavity. That would be the end of the precious and lovely Elena Gilbert…

However, Elena wasn't going to give up… especially when she had so much to live for. She frantically reached into the pocket of jacket, her hand curling around the cure, and pulled it out. Without wasting any time, Elena used all her strength to reach forward and shove the cure into Katherine's mouth.

"I-I… won't let you win…" Elena told Katherine as she forcefully closed her jaw, making her bite down into the cure.

Katherine's eyes widened. The cure was dissolving her mouth… and there was nothing she could do about it. She tried to open her mouth so she could spit the cure out, but she couldn't because of the tight grip Elena had on her jaw. Katherine had no other option – she had to swallow the cure.

The cure slipped down Katherine's throat. She could feel her strength leaving, and her grip on Elena loosening. No! Katherine thought in panic. No, no, no. This shouldn't be happening! I was supposed to win!

Grunting in pain, Elena pulled Katherine's hand from her chest.

"N-no…" Katherine protested weakly, but it was too late. Her muscles were relaxing and black dots were filling her blurry vision. Katherine fell to the floor unconscious beside Elena.

Elena looked at Katherine with a smile.

"Have a nice human life, Katherine."

~VDS~

Katherine's eyes fluttered open. She was lying on the cool, solid floor of the Mystic Falls high school and staring up at the ceiling. Feeling weak and pathetic, she slowly sat up and looked around the darkened hallway. Everything was silent. Katherine was completely alone.

What the hell… Katherine was confused. She blinked multiple times, wondering why she couldn't see clearly down the darkened hallway. My body feels weak…

Realization suddenly dawned upon Katherine – as her blurry memories began resurfacing and coming back to her – causing her to gasp.

"No, no, no." Katherine muttered frantically, as she slowly managed to rise to her feet. She stumbled over to a row of lockers, leaning against them for support, and pressed a hand to her pounding head. Her doppelgänger had shoved the cure down her throat… she was human and weak now. "That bitch…"

Katherine clumsily walked down the hallway, keeping a hand against the wall for support. She eventually reached a set of double doors and stepped out into the cool night air. The breeze ruffled Katherine's tangled curls and she shivered. She hadn't been affected by the cold air in over five hundred years.

Still shivering, Katherine wrapped her arms around herself and stumbled across the parking lot. She didn't know what to do or where to go. There was no way that she could go to the Salvatore Boarding House because Elena had probably already gone back there, complaining and crying about how Katherine had just tried to kill her… and probably bragging about how she had also managed to shove the cure down Katherine's throat, making her a pathetic human.

I am screwed… Katherine thought as she finally reached the sidewalk. She had five hundred and eighty-three years' worth of enemies. Katherine knew that if any of them found out that she was human, they would seek her out to kidnap and torture her, and then when they were finally done with her, they would slowly kill her.

There was also the issue of Klaus. If he found out that she was human, he would defiantly be coming after her.

There was only one viable option for Katherine now… she had to run…

~VDS~

Unknown Location…

Katherine was completely exhausted and lonely. She had been travelling for a few days now, sometimes by walking, or at other times by hitchhiking rides from incredibly strange people. Without any money and compulsion, Katherine had been sleeping at the side of the road in the bushes or under trees, while curling up into a ball for warmth. She was starting to become smelly – which was making it difficult for her to pick up rides – and there were smudges of dirt across her face. Her usually flawless, olive-toned skin was pale and sweaty, her hair was flat and tangled, and her feet were always sore and aching from the hours she spent walking.

To make matters worse, Katherine was starving. She had been living off what little food and water the people she had hitched rides from would give to her... and that meant potato chips with warm and stale bottled water.

"Why is it so hot outside…?" Katherine complained quietly to herself, something which she had taken to doing over the past few days.

It was a later summer afternoon and the sun was setting, but the air was still incredibly hot. Katherine was sweating badly as she walked down the side of the deserted back road. She kept hoping that a car would drive by so she could hitch a ride and get a blast of an AC, but of course Katherine didn't have any luck.

It was moments like this that Katherine seriously wondered where she went wrong with her life. Sure, she hadn't exactly been the nicest person, but she surely didn't deserve something like this.

As she trudged along, Katherine found herself thinking about all the ways she was going to make her doppelgänger suffer if they ever encountered one another again. Elena Gilbert would be forced to suffer as much as Katherine was right now.

Suddenly, Katherine's knees buckled and she stumbled forward, crashing to the ground. She landed awkwardly on her wrist and groaned in pain. The exhaustion and tiredness from the past few days crashed over Katherine, swallowing and pulling her down under…

~VDS~

So this story takes place at the beginning of season 7 for Supernatural. Based on the Vampire Diaries timeline, Katherine was given the cure on June 15th, 2011; this is also the date in which Castiel absorbs all the souls from Purgatory because the ritual takes place during a lunar eclipse. This was just in case you were wondering.

Anyways, that's it for the first chapter of this story. Please do leave me a review. Also, sorry for any silly grammar mistakes.