Luis Buñuel thought he was destined for stardom of surrealism, but is left with nothing. He is offered a documentary on one of the poorest areas in Spain, Las Hurdes, but he has no money. His friend, the sculptor Ramón Acín, buys a lottery ticket with the promise that he will pay for the film, he wins and keeps his promise.
Reality, memories of his childhood, Salvador Dalí and dreams are mixed in his mind, endangering the film and his friendship with Ramón. From there will arise the Buñuel of the future. But what is left on the way? How much will that step cost?