In the underworld of 1970s Rio de Janeiro, the feared “Devil’s Queen” rules a drug cartel from the back room of a brothel. Draped in green eyeshadow and menace, she commands loyalty with a jackknife that serves equally for shaving legs and slitting throats. Her grip on power begins to falter as rival factions — favela gangsters, drag queens, and sex workers — turn on one another in a violent struggle to claim her throne, exposing a world where those excluded from bourgeois society fight for dominance on the margins.