There is nothing as terrifying as horror on a bright sunny day. It is out of place. It is unimaginable, and evil is alive and well. Demons exist. I know, for I have seen them. I have fought them and they are very real. An over-worked executive takes a sabbatical at a monastery on a Grecian island; but what was intended as a retreat, turns into a wild nightmare as he finds himself allied with the Abbot in a deadly battle against a coven of Satanists staying at a remote villa.