Pilar is autistic since she was four years old, now she is 26. The father wants to send her to an Institution , but the mother refuses, this creates a rift in the couple. The family is breaking up: Alejo, the youngest son, has conflicts at school and with his friends. Pilar suffers from increasingly frequent attacks that makes their living really impossible. Finally, they put her in an Institution. She will find another way to live, but something will happen that will change the course of the family.
Helena is a talented singer in Buenos Aires. Just as she and her band get a residency at a prestigious theater in the city, the boyfriend she's mad about coldly announces that he doesn't love her any more. The film is punctuated by intense bursts of tango. Every song moves the story along, providing an insight into the characters and access to the protagonist's feelings: nostalgia, passion, sadness, and joy in turn. The lyrical and musical wealth of tango, brilliantly performed by Eugenia Ramírez Miori, unites the two stories, past and present. 'La cantante de tango' is a poignant auteur film about a woman trying to get back on her feet after a devastating break-up.
In 1965, a man named Matías is taken to a psychiatric hospital, after being found at the streets, "in the company of homosexuals and in a state of intoxication by alcohol and drugs". His documentation says he's 41 years old and born in Poland. He says his mother was an aristocrat. His arrival will have a profound impact on the institution and, especially, on one of the doctors.