A group of people move through a labyrinth of tunnels in the urban underground. They cut through the darkness with the multiple flashlights strapped to their bodies. During their journey, they'll have to face the dangers that lurk in the darkness and, what is worse, themselves.

Barcelona, Spain, 1912. The disappearance of a girl from a wealthy family triggers a series of events that will shake the weak foundations of a hypocritical society.

Irene is a woman in her thirties with a four-year-old daughter who has just separated from her husband and cannot find her place in the world. Determined to get by at whatever cost, she flees to a remote village in the mountains to try to rebuild her life, with the help of the lush vegetation, omnipresent nature and legends around her.