They were born on the exact same day.
At the exact same time.
Except one thing was different.
One of them was born in heaven.
And the other was born in hell.
That one difference would mark them forever.

Sami was born to Ruby (no last name) and Sam Winchester. Her mom was a demon and her dad was what people like calling an abomination.

She doesn't think of him that way. She thinks of him as the man who dove into hell to get herout.
Sami (not Sammy, that's what her uncle called her dad), was short for Samuela Winchester. She doesn't blame her dad much for the name. He was busy forging her birth certificate, and he needed to do it fast. After all, she was born in hell not a hospital. As far as the world knew, her mom had abandoned them as soon as she left the womb, and therefore she had no mother.

He didn't even have to lie much, two out of three of those things were true.

Daine was born Deana Winchester(Sami was the first one to call her Daine, saying it was the only name unique enough for her that didn't sound like some exotic disease) raised by both her parents and an older half-brother.

Sami's dad never really paid much attention to women after she was born. She was the only important girl in his life, excluding Daine her mother, Lisa.

Then to make matters worse, the angels revealed the damn prophecy.

Apparently it was Michael VS Lucifer all over again.

Guess what card Sami drew.

She was the living embodiment of the portal of hell. Daine was the embodiment of heaven's.

Next to Lucifer Sami was the strongest thing from hell and Daine was the strongest heavenly being next to God and Jesus. Destiny dictated that she would succumb to hell's powers and would battle it out with Daine for who would rule.

As her Uncle Dean says, screw destiny.

Daine and Sami basically grew up like sisters, except their family expected Sami to attempt to murder Daine.

Though they were close, Daine and Sami were polar opposites (except in brain power). Daine was a social butterfly, a troublemaker, and...let's just say she REALLY liked boys. Sami was conservative (probably because most hunters' kids ignored and bullied heron principle), a rule follower (for the most part, after all, her dad was a hunter), and she liked boys too, they never really paid much attention to her back.

Well all except one...

But oddly enough, this story is not about all of that. At least not entirely. Sure, Daine and Sami would supposedly battle it out when they reached their twenties, but this takes place a few months before their seventeenth birthday, on December 1st, 2031.

Let me take you to back to twenty years before, where the girls went on that cold December day...

"Are you sure this is the place?" Sami asked doubtfully, looking around the practically empty town

"Yes, I'm sure it's the right place!" Daine shivered a litte, "...But if I had known it was going to be so cold, I would've brought a jacket or something"

Sami tugged protectively on her own coat, "It's the winter in Michigan, what did you expect?"

Daine thought for a moment, she hadn't really considered what it would be like when they got there "...That it might be somehow warmer in the past?"

Sami rolled her eyes. "Whatever, we just need to find them quickly." The teen's eyes scanned her surroundings for that familiar Impala, but she couldn't find it. "If you were them, where would you be?"

"In a bar." Daine said immediately, causing Sami to look at her incredulously, "What? My father very much enjoys drinking"

"Okay, supposing they are in a bar, in this weird little town, we're minors. How are we supposed to get into the bar?" Sami asked, putting a hand on her hip.

"Psshhh, It'll be easy" Daine said, smiling, "We just walk in. It's not like they card you at the door."

"And if they do? Do you even have a back-up plan?"

"As a matter of fact, I do." Daine said, smiling even wider, holding up two IDs that looked like there were made circa 2011.

Sami shook her head, partially with disgust and partially with amusement, "How did I not see that coming?" She grabbed the ID with her picture on it, and looked at the name, "Lucy Damien?"

"Well it's not like I could put your REAL name." Daine replaced her own fake ID in her pocket, "Mine says Angelica Spirit."

"Of course it does."