Spain, 1970s. A Clockwork Orange, a film considered by critics and audiences as one of the best works in the history of cinema, directed by Stanley Kubrick and released in 1971, was banned by the strict Franco government. However, the film was finally premiered, without going through censorship, during the 20th edition of the Seminci, the Valladolid Film Festival, on April 24, 1975. How was this possible?

Forty years later, Guillermo Montesinos, the actor who played José María el Cepa in The Cuenca Crime (1980), directed by Pilar Miró, returns to the various locations where the shooting of the mythical film, narrating the infamous Grimaldos case (1910), took place.