A mysterious place, an indescribable prison, a deep hole. An unknown number of levels. Two inmates living on each level. A descending platform containing food for all of them. An inhuman fight for survival, but also an opportunity for solidarity.

On the birthday of the patriarch of the family, one of his sons decides to come out of the closet and test the tolerance of his nearest and dearest. But the surprises that he has up his sleeve do not end there.

Bilbao, Basque Country, 2001: a ruthless terrorist attack shatters the family of police officer Carlos Martínez. Barcelona, 2013: Carlos leaves Mariusz, a Polish immigrant, in charge of his daughter and, offering vague excuses, returns to the Basque Country and rents a house in Lekeitio, a small village by the sea.