A soldier from the 15th century, a university student from the 19th century and a nurse from the present join the secret ‘Department of Time’, a secret department within the Spanish government with the ability to travel through time. Their mission is prevent changes in history.
On the edge of the Antarctic Circle, in the years after World War I, a steam ship approaches a desolate island far from all shipping lanes. On board is a young man, on his way to assume the lonely post of weather observer, to live in solitude for a year at the end of the world. But on shore he finds no trace of the man whom he has been sent to replace, just a deranged castaway who has witnessed a horror he refuses to name. The rest is forest, a deserted cabin, rocks, silence, and the surrounding sea. And then the night begins to fall…
The corpse of a young man appears in a forest on the island of La Gomera. The case closes with the accusation to a local politician who is exonerated in the later judgment. Three years later, Sergeant Bevilaqua and his assistant, Corporal Chamorro, are sent to the island to revive the investigation. Corporal Anglada accompanies them, the last one who saw the young man alive.