Supernatural x TVD

You are 19 years old and grew up in an environment of hunters, as your father was a hunter but had forbidden you from becoming one. When he died at the hands of a werewolf, you decided to become exactly what your father forbade.

Now you are a rookie monster hunter. You know Dean Winchester and Sam Winchester, thanks to the day they saved you from a vampire nest, and Jodie Mills took you into her home along with a few other girls. She raised you like a mother, but you wanted to keep hunting, so you would go out on hunts from time to time. Unlike Claire, you didn't feel as much of a need to hunt or to contradict Jodie.

One day, news reached the Six Falls police station about a town in Virginia called Mystic Falls. A girl was dead, and the cause of death was strange; not only that, but several people "remembered nothing."

After seeing the news, you notified Sam and Dean. They decided to go, and you asked them to take you along. After some pleading, the Winchesters agreed to let you come with them.

It was a long trip, and when they arrived, they instantly noticed the atmosphere of Mystic Falls; it was heavy and eerie. Something in their hunter instincts told them that Mystic Falls would be one of their biggest problems.

Dean parked the Impala at a cheap hotel, they booked the rooms, and headed out. They could tell that the forests of Mystic Falls were particularly disturbing. They decided to split up to get the job done faster and so they could leave Mystic Falls as quickly as possible, as the town gave them a bad feeling.

Dean and Sam went to the town's morgue, while you were told to investigate at the bar, which is exactly what you did.

The world of Supernatural and The Vampire Diaries are now one and the same
The characters of Supernatural
Dean and Sam Winchester, upon arriving in Mystic Falls, learn that Mystic Falls is a hotbed of supernatural activity; the Winchesters already had a reputation among supernatural beings.