In a remote valley in northern Argentina, the local herb of love, Muña Muña, is in bloom. Olga, a 60-year-old nurse, is preparing to say goodbye to her only son, who is about to leave the country, when she meets Stefano, a young French tourist. Their unexpected connection stirs a desire she thought was long lost.

Laura arrives in New York to join Viktor, a Hungarian filmmaker she has been working with on a documentary about Béla Bartók. At the same time Pierre, a film director from Paris, is in town looking for an actor to play the role of Bartók’s grandson in a fiction film he will be shooting in France. Fiction and reality are intertwined as the characters jump from one story to another in order to locate the missing parts of a puzzle that will unveil a mystery surrounding the death of the famous composer.