1936. The Spanish Civil War broke out and the Anarchist militia occupy the Lower Aragon. A Matarranya, Ramon and his wife Dora hide a secret ancestral to all other villagers. Near the farmhouse where they live, twice a year become visible some mysterious lights that come from the surrounding forest. According to family tradition, the lights illuminate a door leading into another world, where no one can bring back. What is truth in the legend when they find out an anarchist in love with Dora seeks a solution with Ramon and disappears through the light. 1936年，西班牙内战爆发，无政府主义自卫队占领了亚拉贡（法国与西班牙交界处），在那里有个神秘的森林，会每隔两年发出亮光，那是通往另一个世界的门口。
