Malasaña neighborhood, Madrid, Spain, 1976. While political turmoil ravages the streets all over the country, the Olmedo family arrives in the big city and settles into their new apartment. They soon discover that they are not the only ones roaming its corridors.

Lucía just moved to a new appartment in the suburbs of Madrid, there she will try to start over, until she receives a very particular visit...

Son confesses to his mother, Ana, that he does not feel like a girl; he is a boy. Confused and blocked, Ana will decide to stop in order to observe and understand him and, in the same way, to understand herself. Ana and Son are two sides of the same coin: a mother who does not take care of herself, of her own identity, and a boy in search of his identity with all his strength.