Holly

Centuries after a scourge called the "dark days" made a rift between humans and elves, the worst of those elven offenders have found a way to escape their exile. Holly--a being considered vermin and expendable--is to be used as a key to break through the arcane barrier between elven and human lands. She finds the world beyond to be a wonderous place where her kind are welcome.

Alas, those that used Holly as a tool want that world for themselves. And they will kill to control it.