Chile, 1997. The prosecutor Leo Ramírez, 32, is recruited to lead a dangerous investigation against Colonia Dignidad, one of the most cruel criminal organizations in the history of the country and to arrest its maximum leader Paul Schaefer, a fugitive from justice for abuse of minors. Leo, who grew up in the shadow of Colonia Dignidad, will try to keep his personal history out of the picture, but the return of a mysterious figure from his past will make him face the secrets and guilt with which he has struggled all his life.