According to Variety, the series will cover three periods of Vargas' life: Mexico during the second half of the 20th century; Costa Rica in the 1920s; and Madrid in the 1990s, where he formed a friendship with Spanish filmmaker Pedro Almodóvar (Julieta).

Known as The Lady of the Red Poncho, Vargas began as a street performer before making a name for herself in nightclubs during the 1940s. Her style was unique at the time because she did not conform to the looks of other female singers. She came on stage wearing a poncho and was known for smoking cigars, drinking tequila and carrying a gun.

In 1961, she released her self-titled album, which included songs such as "La Llorona" and "Paloma Negra". Vargas, who was romantically connected to Frida Kahlo and Ava Gardner, would fall out of the spotlight for at least 20 years due to her alcoholism. It wasn't until 1994, when she released her album La Llorona, that she found her way back to what she loved.

She was 81 years old when she came out as a lesbian to the public. In 2003, she made her debut at Carnegie Hall. Four years later, she was honored with a Grammy Award for Musical Excellence. Vargas died in 2012 at the age of 93.

Castillo said she was fascinated by his role because she feared him. "That's why I accepted it," she said. "There is a lot to learn from Chavela, starting with her freedom."

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