This documentary is a valentine to the women who have contributed to the development of Mexican music with their distinctive voices. Director Beto Gomez explores the struggles and successes of women such as Chavela Vargas, Lila Downs, Eugenia León, Astrid Hadad, La Negra Graciana, and Iraida Noriega. Through this intriguing film, Beto illuminates what is vital in modern Mexican music.