Lemmy Caution is on a mission to eliminate Professor Von Braun, the creator of a malevolent computer that rules the city of Alphaville. Befriended by the scientist’s daughter Natasha, Lemmy must unravel the mysteries of the strictly logical Alpha 60 and teach Natasha the meaning of the word “love.”

A supposedly idyllic weekend trip to the countryside turns into a never-ending nightmare of traffic jams, revolution, cannibalism and murder as French bourgeois society starts to collapse under the weight of its own consumer preoccupations.

Pierrot escapes his boring society and travels from Paris to the Mediterranean Sea with Marianne, a girl chased by hit-men from Algeria. They lead an unorthodox life, always on the run.

Successful surgeon Tomas leaves Prague for an operation, meets a young photographer named Tereza, and brings her back with him. Tereza is surprised to learn that Tomas is already having an affair with the bohemian Sabina, but when the Soviet invasion occurs, all three flee to Switzerland. Sabina begins an affair, Tom continues womanizing, and Tereza, disgusted, returns to Czechoslovakia. Realizing his mistake, Tomas decides to chase after her.