Un Chien Andalou is an European avant-garde surrealist film, a collaboration between director Luis Buñuel and Salvador Dali.

Short film to a song of love lost and rediscovered, a woman sees and undergoes surreal transformations. Her lover's face melts off, she dons a dress from the shadow of a bell and becomes a dandelion, ants crawl out of a hand and become Frenchmen riding bicycles. Not to mention the turtles with faces on their backs that collide to form a ballerina, or the bizarre baseball game.

The film consists of a series of tightly interlinked vignettes, the most sustained of which details the story of a man and a woman who are passionately in love. Their attempts to consummate their passion are constantly thwarted, by their families, by the Church and bourgeois society in general.

The genius Spanish painter Salvador Dalí undertakes an amazing journey through the unknown mental territories of Upper Mongolia in search of a giant hallucinogenic mushroom while paying an experimental tribute to the French poet Raymond Roussel (1877-1933), a visionary and eccentric writer, precursor of the surrealists and much admired by them.