Western Pyrenees, year 778. When his land is threatened by the ruthless armies of the Frankish emperor, a Basque warlord asks for help from his ancestral gods.

Basque Country, Spain, 1843. A police constable arrives at a small village in Álava to investigate a mysterious blacksmith who lives alone deep in the woods.

Having fought in the First Carlist War, Martin returns to his family farm in Gipuzkoa only to find that his younger brother, Joaquín, towers over him in height. Convinced that…