The return of Luisa to the house where she worked as Marta's maid is the trigger for a long confession, in which truth and lies are inseparable. The film confronts, with moderation and subtlety, the closed and welcoming status of a society lady, with the barbarous and primitive thinking of her ex-maid who has visited her for one night, and shows what seemed like an inconsequential encounter. little by little it becomes a ritual of death.