Arran Winchester has had a life of running state to state to hunt down monsters with her mom.
Her dad left when she was 10 and had a reason, supposedly a good one.
She could tell when he left he didn't want to go but could see that he didn't have a choice.
She swore to herself that one day she would go out and look for him, maybe even tell him about hunting, though he wouldn't believe her.
Little did she know that he was pretty much born into hunting and had done things she hadn't even thought of.
He had killed the yellow eyed demon, stopped the apocalypse 'with his brother', went back in time 'because of an angel' and meet his mom and dad before they were even married, got the Mark of Cain, hell he'd been to hell, heaven, and purgatory.
Due to her mom dying on a hunt, she goes looking for her dad, her only family she has left.
But she doesn't know that it's gonna be more like he finds her.
*I say a thing where every demon, like the actual demon not the vessel, has a someone or something that they care for extremely deeply. I didn't get that from the show I just made that up for the story. Story does not relate exactly to a certain event in the show, demon used that was in the show quite a few season ago.*