One day, 17-year-old Ava Doxine, just trying to get to school, encounters a monster who looks just like any other normal human. But the thing is, he's on her side. His family threw him out because he refused to kill a human, and now he's on a hunt to kill them all before things start getting ugly, like the end of the world ugly. And he needs a human to help him. So he chose the person who smelled like one of him because of one of the monsters posing as her dad, and together they can stop the evil that lurks in every corner.