Stalker is a Soviet science fiction film directed by Andrei Tarkovsky. Set in a post-apocalyptic world, the film follows a guide, known as a Stalker, who leads a writer and a scientist into a mysterious and dangerous area called the Zone. The Zone is said to have the power to fulfill a person's innermost desires. Stalker is a visually stunning and philosophical film that explores themes of existentialism, spirituality, and the nature of reality.