Belle Sullivan is a normal 17 year old girl except for her deepest, most heart wrenching secret she keeps from everyone but her Aunt Kelly. Callum White is a Guardian sent from Heaven to protect Belle from the Fallen Angels who long for her soul. Except for the obvious Fallen Angel soul thing, Callum can't shake the feeling there's something more going on with Belle. Can he save her from the Fallen Angels and her own demons before its too late?