Manuela [Roberto Cobo] and her daughter Japonesita [Ana Martín] sleep inside a house when a truck rumbles up and honks its horn. The sound belongs to Pancho [Gonzalo Vega], a man who has hurt Manuela before, even tearing her iconic red flamenco dress. Startled, Manuela wakes the other women of the brothel and searches for red thread to mend the dress, but is ultimately sent to Ludovinia [Emma Roldán], an elderly, deaf woman who hands over the thread. Ludovinia then shares a troubling memory: Don Alejo [Fernando Soler], the town’s mayor, once showed interest in Pancho, hiring him to drag his daughter in a wagon and nudging him toward schooling. As Manuela leaves, she bumps into Don Alejo, who casually proposes buying the brothel.
Meanwhile, Pancho is at his brother-in-law Octavio’s gas station, where Octavio (Octavio’s name is associated with Julián Pastor) laments that the town has been drained and Don Alejo has been systematically snapping up properties. Don Alejo had lent Pancho money for his truck and now comes to collect payment. Japonesita, seeking Don Alejo, interrupts and finds Pancho crying; he lashes out at her for intruding but then softens, warning that Don Alejo is a bad man while insisting Don Alejo never promised to restore electricity to the brothel.
A quarrel erupts between Manuela and Japonesita over a potential sale of the brothel, and Japonesita resolves to decorate it in the style of La Japonesa, her mother. This triggers a flashback that reveals how Manuela met La Japonesa [Lucha Villa], a pivotal moment in their past. In the memory, Manuela arrives with a troupe of dancers for Don Alejo’s inauguration, and it’s clear that the mayor has already begun breaking his promises to the community. Manuela dances as boos rise around her, but Don Alejo lets the performance finish. The party moves to the river, where Manuela is pushed in, stripped, and the crowd hurls insults, shouting, “She’s a man!” Manuela retorts, “It’s only good for peeing.” La Japonesa is inspired by the defiance and bet swears she can provoke a reaction that would change Manuela’s life.
In the present, Octavio lends Pancho the money to pay Don Alejo, and they celebrate by visiting the brothel. Manuela hides and watches Pancho and Japonesita dance through the window. Pancho insinuates that Japonesita owes him for the tears she saw, then grows violent, hurting her and demanding Manuela. Japonesita insists that Manuela has already left, while Pancho’s aggression intensifies. Manuela bursts in wearing her red flamenco gown, dancing seductively for Pancho, and the two share a kiss until Octavio intervenes. Pancho lashes out, accusing Manuela of orchestrating it to queer him.
Pancho and Octavio chase Manuela from the brothel in a truck, and Don Alejo, with his servant Renaldo, follows them to the quarry. Renaldo asks if he should shoot Pancho and Octavio, but Don Alejo resists, even as Pancho beats Manuela. The mayor finally approves violence, and Pancho delivers a fatal kick to Manuela’s head as the culprits drive away. Don Alejo promises to see them behind bars, declaring, “They will learn what it really means to be macho.” The camera lingers on Manuela’s bloodied head, a stark, brutal image.
Back at the brothel, Japonesita consoles another frightened resident, assuring her that Manuela will return “as usual,” even as worry gnaws at the walls. The final image shows Japonesita extinguishing an oil lamp, the room sinking into darkness as the story closes with unresolved risk and a vigil kept for the woman who defined their world.