The journalist Andrés Oviedo must write about the murder of the young militant Mariano Ferreyra for the magazine in which he works. Oviedo conducts a series of interviews and talks with different relatives and friends of Ferreyra. The search for the truth and the reasons for the crime leads him to confront his editors, who displace him from the case. Given the complications that arise, Andrés hesitates to continue with the investigation, but the impulse of his daughter, from the same generation as Mariano, helps him to continue.