Stalker is a Russian science fiction film directed by Andrei Tarkovsky. Set in a post-apocalyptic world, the film follows a guide known as the Stalker who leads a writer and a scientist into a mysterious and dangerous area called the Zone. Within the Zone, their deepest desires and fears are brought to life. Stalker is a philosophical and visually mesmerizing film that delves into themes of existentialism, human nature, and the nature of reality itself.