Why is it that when we pray for the supernatural, we are surprised when it shows up?

Seventeen-year-old Olivia Stanton knows the Bible says guardian angels exist, but assumes they only show up when people are dying or need to be saved from some kind of sudden disaster...until her own guardian angel appears to her in the form of a handsome blonde-haired, blue-eyed guy her own age. As Olivia gets to know Mike, she begins to see angels—both good and evil—on a regular basis, and quickly learns how many misconceptions she had about the spiritual realm.

Will Mike be able to prepare Olivia for the daunting spiritual battle about to overtake her small town before it destroys her and everyone she cares about?