(Disclaimer: I do not own the show Supernatural or any of its characters. I only make claims to my OC.)

Just to warn you, this story will contain a lot of smut since I don't like to hold back on my writing when things get hot and heavy. The plot isn't based around sex, it's just a little add in. If you don't like it, I recommend skipping the chapters in question or leaving the story permanently.

Stay crazy.

ONE: Newest Hope

Dean leaned against the hood of his beloved Impala, eyes scanning the deserted motel parking lot with uncertainty. The pavement shined with the remnants of the previous rainfall and left off a dewy glare. He was placed in the orange beam of the streetlight positioned directly over him. At first, he assumed this would make it easier to be found, but then felt unnecessarily unprotected.

"Think he's coming?" Sam asked edgily, looking equally as dubious as his brother.

"Cas ever let us down before?" said Dean, shifting his hands into his coat pockets and fondling with his car keys nervously. He watched the red neon motel sign flicker ominously, the 'o' in the word already completely burnt out.

"You sure you gave him the right address?" Dean asked, shifting a glance over at his younger brother who stood beside him with his hands buried in his jean pockets.

"Blackgate Motel, Minnesota," confirmed Sam, meeting his brother's eye and gave a small shrug. "Maybe he got held up."

"I can't imagine how an angel could be held up," remarked Dean. "Usually it's all 'poof' and you're somewhere in milliseconds. What, do they have angel traffic now? Besides, he's the one who had something oh-so-dire to talk about."

"He said it's something that could help us," said Sam. "Maybe something that could help us kill Lucifer."

Dean recalled the recent failure the Colt had performed against the devil. It had resulted in the deaths of Jo and Ellen Harvelle, who had sacrificed themselves to allow Dean and Sam to reach Lucifer. And for what? Nothing. Unfortunately for them, the knowledge that one of the five creations the Colt could not kill was the devil himself remained unknown to either of them.

Dean's stomach tied in a ensnarement of angry gnarls every time he thought of the subject. It hadn't happened more than two weeks ago and yet the sight of Ellen holding her dying daughter was still planted firmly in his brain like an incurable poison.

"Well, being late is a great way to start it off," Dean said bitterly.

"The patience humans have is always something I could never comprehend."

Dean and Sam started, looking in unison to their right for the sound of the familiar, hoarse voice. Castiel, dressed in his usual attire that consisted of the tan trench coat and neatly pressed suit underneath, strode toward the Winchester brothers with the same brooding expression he typically wore. He stopped three feet away, eyes combing Dean and Sam's face with a look of slight determination.

"Cas," said Dean with his eyebrows furrowing slightly. "Please tell me there's a good reason we waited twenty minutes in a dingy parking lot when I could have been buying dinner and beer." Even at his words, his stomach released a small growl.

Castiel's dark blue eyes flickered monetarily across Dean's stomach before looking between the brothers.

"You need to drive to Cannon Rock, Indiana as fast as those car's wheels can drive you," he said huskily.

Sam frowned and Dean stared at the angel with a transfixed expression.

"Care to elaborate?" Dean said.

"There is someone there. A girl. You need to find her."

The brothers exchanged looks.

"Back this up a little," said Dean. "We need a little bit more info than 'a girl'. Are we talkin' girl with cute pigtails who watches Disney movies, or girl as in woman?"

"As if that has anything of import," said Castiel in the same low tone.

"Then what does? Will she be able to help us stop Lucifer? Who is she?" asked Sam.

"And if she's so important to find, why couldn't you just zap yourself there and save us the trouble?" asked Dean, placing his hands on his waist and frowning at Cas.

"I can't. None of the angels can. She bears the same written inscription on her ribs as the two of you. I do believe she can help us destroy the devil, however."

There was a short pause. Dean was completely taken aback. If anything, he was expecting Cas to come with him with news of the the apocalypse hitting another town and that they had to charge to the rescue. However, he was not about to turn down something that could help them.

"How were you able to find her if she has those markings?" asked Sam.

Castiel looked as though his patience was running slightly thin. It wasn't every day that the angel lost his temper or stepped out of his generally cool demeanor.

"Though I am cut off completely from heaven, I still hears words. Rumors. We are not the only ones hunting this girl down. Demons have been tracking her down for the majority of her life, which is why the angels had carved those markings on her."

"So they want to protect her?" asked Dean. "Why?"

"For the same reason you should set out to find her now instead of wasting time talking to me."

"I don't get it," Dean said. "We're supposed to believe this girl is the key to stopping the apocalypse? After everything we've sacrificed, after all the lives that have been lost? What makes her so special?"

"It hasn't come to my knowledge until recently that this girl is the key. The theory has been researched high and low from heaven. To be frank, I'm not even sure now if it's true. But what other options do we have at this point?"

Dean reasoned with the truth in his words. After everything that's happened, driving down a few hours to Indiana to find a girl who may be the answer to stopping the devil suddenly seemed so simple compared to everything else he had done. Yet something was still pressing on the back of his mind.

"What makes her so special?" he repeated. "What girl could be powerful enough to stop the apocalypse?"

Cas wavered for a moment, gaze overlooking the brothers, giving Dean the impression that he could see something that they couldn't. He eventually looked back at them and his expression was more set than before.

"The girl was born to an angel father, and a demon mother," he said coarsely. "A halfbreed. More commonly known as Nephilim."

Dean would have taken a step backward if he were not already leaning against his car. He did however stand up straighter, brows knitting together and staring at the angel before him.

"Whoa, hang on," said he said. "You're telling me this girl is the . . . offspring of angel and demon? What angel would sleep with a demon?"

"'As the dark sun rises, a daughter of Lucifer who beholds terrible beauty rises to corrupt the being of one so pure and light,'" Castiel said morbidly. "I know only what is written. There are only three things that are said to destroy Lucifer; Michael, Nephilim, and God himself."

"So this means she's the alternative to saying yes to Michael and Lucifer," said Sam with a small, disbelieving laugh.

"Hopefully. But the angels do not want you to find her. Neither do the demons. As we believe she could help us defeat the devil, they believe she can destroy Michael."

"So we just need to get to her first," said Dean placidly. "Alright. Sign me up. How will we know who to search for?"

Castiel met his eyes edgily, breathing out a small sigh that escaped his lips as a white mist.

"'The daughter of good and evil shall be named by the darker side of the flower. Resting upon her bosom there shall lay a necklace of the cold-blooded.' There is next to nothing on information about her, apart from small amount I had gathered before all this began."

Dean arched an eyebrow.

"If she's so important in the heaven realm, why does there seem to be basically nothing about her?" asked Sam.

"Beside riddles. Getting a bit sick of your mamby pamby angel mystery bogus," said Dean irritably.

"It was not my job to look over her, as it was for other angels," said Castiel with a crack of irritation in his voice. "I only know what I have heard before. Find the girl and convince her to side with us. It's our next best option to destroying Lucifer."

"Should be a real kick," said Dean, then raising his voice to an airy, joking tone."Hello, ma'am. I don't think we've properly met but you're the daughter of an angel and demon and possibly one of the three things that can kill Satan and end the apocalypse. Care to team up?"

Castiel set a stony gaze upon him.

"Believe me, you do not want to see what happens if she lands in the hands of demons."

New Supernatural fic. Hope you guys like. This idea just kinda came hurtling out of the blue and I decided to write it down kind of as a side story to work on when I'm not writing on my other OC Supernatural fic. And yeah, I know. This looks like it just has 'Mary Sue' planted all over it but I promise you that I have no intention of creating one, so I hope you give it a chance.

Well! If it's not too much trouble, I would absolutely adore you if you took the time to write a little review of what you think so far :) next chapter should be out soon.