A boating accident runs a young man and woman ashore in a decrepit Spanish fishing town which they discover is in the grips of an ancient sea god and its monstrous half human offspring.

A sci-fi writer (Hutton) is invited to an island for a conference, only to discover that he's been lured into a trap.

Viggo Mortensen plays the Spanish soldier-turned-mercenary Captain Alatriste, a heroic figure from the country's 17th century imperial wars.

In the Falangist Spain of 1944, the bookish young stepdaughter of a sadistic army officer escapes into an eerie but captivating fantasy world.