Directed by Paco Periñán, this intense Spanish psychological drama delves into the destructive power of obsession, guilt, and forbidden desire. The story follows Juan (Antonio Banderas), a man fleeing Madrid to escape a deeply obsessive relationship. He takes refuge in a remote, desolate region of Andalusia, working as a welder at a radioactive waste plant near a mine. Attempting to build a normal life, he starts a budding romance with a local shopkeeper named Rosario (Rosario Flores). However, his self-imposed exile completely shatters when his past catches up with him: his lover—who happens to be his biological sister, Ana (Emma Suárez)—tracks him down. Refusing to let him go, Ana triggers a volatile spiral of lies, possessiveness, and psychological tension that threatens to consume them both.