One Step Ahead

What if you felt alone in the world? What if you were diffrent? Calvin Holland is diffrent, she's a nephilim, half demon. She's the one who will fight for the humn race. searching for others like her she comes across Xavior a boy who will "Fight" along side her, but is he really half demon or something eles? Is Calvin really only half demon or is there something more to her? Read with Calvin and see what she goes threw. Shes the only one who can bring the demons down but is she up for the challenge?