After eight years, a teenager disappeared during an excursion is identified by his mother in a juvenile center and taken home. Affected by a strong amnesia, the boy does not remember anything of the incident and his past, despite finding a family deeply marked by his disappearance. And so the doubts begin to creep about the identity of this person: it is a phoney? And what is the truth about that tragic event of many years before? Alex Monner offers a magnificent interpretation in the role of the boy, in an intense thriller set in the snowy mountains of the Pyrenees, signed by the most significant couple of directors of independent Spanish cinema.