Joana Prats suffers from agnosia, a strange neuropsychological illness that affects her perception. Although her eyes and ears are in perfect condition, her brain cannot interpret the stimuli she receives through them. As the only one who knows the industrial secret left behind by her father the enigmatic young girl will become the victim of a sinister plan to get the information out of her by taking advantage of her sensory confusion. As the plot unfolds, the two men closest to her will become crucial to its outcome: Charles, Joana's fiance and her father's right hand man, and Vincent, a young, impulsive servant working at the Prats' mansion.

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