Simone (Sol Miranda) is a young black woman who spent years performing sex acts online to pay for law school. She has just passed a public defender exam and her ambition is to defend women in cases of abuse. In order to reawaken Simone's sexual desire, a friend sends her a link to a video where a black woman practices sadomasochism. Gradually, Simone enters a journey of learning about BDSM practices, and her sexual interests lead her into a world of violence and eroticism.

"Rule 34" is Júlia Murat's third feature film, which took home the Golden Leopard award for best film at the Locarno Film Festival.