Reproduce within your breed. That was the main law, no cross breeding allowed. It is said that a cross-bred is uncontrollable and will wreak havoc in the human land.
Louis was a fairy, naturally small but able to grow to normal size, though a bit short. And his skin color was the color of his eyes, a blue with a tinge of grey. He could -if he wanted to- change his skin color to a tan human color. He had more power than any had seen, able to manipulate the elements and read minds. Louis also had a curiosity like no other, so what's he to do when he sees a werewolf hunt?
Harry is a werewolf, living in the human world. A loner in every aspect, having no Alpha as he was a rouge, he always wished for something more. So when he goes to hunt in the forest one night, what's he to do when he sees a little blue light out of the corner of his eye?