Bodies with a purple swimming suit are found in Acapulco. Mateo Osorio, the best detective in Mexico is sent to solve the case.

Mateo Osorio, Mexico’s best criminologist is sent to Acapulco to investigate a series of murders. The corpses he finds, that no one comes forward to claim, are all wearing a purple bathing suit by the famous fashion designer Benjamín Santanaya. The movie is based on the book by the same name by the writer, art critic and curator Olivier Debroise.