This science fiction milestone from director Andrei Tarkovsky (Solaris) takes you into the Zone, a mysterious, guarded realm containing a mystical Room in which occupants' secret dreams come true. Stalker, a man able to lead others to this holy grail, escorts a writer and a scientist through this foreboding territory and confronts several unexpected challenges along the way. Based on the novel "Roadside Picnic" by Russian sci-fi writers Arkady and Boris Strugatsky.