Sour

Sour is a Spanish drama centered on a family business struggling with a decline in sales following false accusations regarding the quality of their products. To encourage her sister Laura, who manages the establishment, Mentxu arranges a surprise party. Although the event is intended as a gesture of support, the gathering does not unfold as planned and instead becomes a test of trust.

The film was directed by David Pérez Sañudo, who also served as a producer and co-writer alongside Sergio Granda and Pablo Bartolomé. In the chronology of his directorial work, this project follows Tiempos muertos from 2017 and precedes The Harvester from 2026. The production was a collaborative effort between several companies, including Amania Films, Tartar films, Filmakers Monkeys, and Sincio de Pelis SL.