There's a big difference between what will sound great on paper and what sounds natural when you talk.
So, with that in mind, I've created my logline (a one to two sentence description of my project) to use for those elevator meetings with agents or editors. Here you go:
My book is about a girl who is more than human and thinks her supernatural abilities are only useful for delivering some vigilante justice on the streets of New York City. When another non-human comes to town and hunts her down, she has to choose between claiming her birthright and unleashing a demon army onto humanity or losing the only man she's ever loved.