anti, a young high-school student with a serious physical reaction to sunlight, is forced by his health to move with his single mother to a shadowy, isolated village in the mountains of Spain where the inhabitants begin to reveal themselves as strangely xenophobic. When terrible, violent events begin to occur, Santi becomes first a pariah at school and then strongly suspected by the police of hideous murders. Santi himself, however, wonders if he is not the next victim.

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