Lucía and her son live isolated from society in a flat place where there’s practically no life. The small family unit formed by mother and son hardly ever receives visitors, and their goal is to lead a quiet existence. At first they succeed, but the appearance of a mysterious, violent creature that starts stalking their small house will put the relationship that unites them to the test.
Julia, a woman suffering from a degenerative sight disease, finds her blind sister Sara hung in a basement. Despite all signs pointing to suicide, Julia decides to investigate what she intuitively feels is a murder case.
Four mathematicians are imprisoned in a shrinking room; with the walls closing in, they must try anything to escape this fatal puzzle.
