Albert Teixidó (Bert) travels to the island of Mallorca after receiving a mysterious letter from his childhood friend Bernardo, who disappeared months earlier in the Tramontana mountains. On the island, he searches for clues to locate his friend, clues that will lead him to reveal forgotten events from the past and coincidences from the present, provoking Bert's obsession with continuing the search. This all culminates in an obsessive and metaphorical initiatory journey into the unknown.

The film is a free adaptation of Isaac Asimov story in 1976 wrote "The Riddle", but placing it in 2005. This is a dramatic fictional story that nowadays we consider a bad omen in the world in which we live. A small autonomous region that is about to go bankrupt. A world in economic crisis and securities, overpopulated, and governed by those who will not hesitate to look for its own interests.