Stalker is a 1979 Soviet science fiction art film directed by Andrei Tarkovsky with a screenplay written by Arkady and Boris Strugatsky, loosely based on their 1972 novel Roadside Picnic.

Plot

The protagonist (Alexander Kaidanovsky) works in an unnamed location as a "Stalker" leading people through the "Zone", an area in which the normal laws of physics do not apply and remnants of seemingly extraterrestrial activity lie undisturbed among its ruins. The Zone contains a place called the "Room", said to grant the wishes of anyone who steps inside. The area containing the Zone is shrouded in secrecy, sealed off by the government and surrounded by ominous hazards.