In their last attempt to save their marriage, Sara and Óscar decide to take a short vacation in a cabin in the woods with their two children. But upon arrival, strange events corrode the tense atmosphere between them a woman prowls the house predicting events that defy nature, which break the family from within as they confront unresolved problems from their past.
Two narrators, one seen and one unseen, discuss possible connections between a series of paintings. The on-screen narrator walks through three-dimensional reproductions of each painting, featuring real people, sometimes moving, in an effort to explain the series' significance.