Happiness for a just going out from prison stalker in that, to conduce to Room other. For this time he conducts Professor (Гринько), researcher-physicist, and Writer (Солоницын) in a creative and personality crisis. They three penetrate through cordons in Zone. A stalker conducts a group carefully, by a circuitous way, feeling a way nuts. Phlegmatic Professor trusts him. Скептичный Writer vice versa, shoots a neck, and, alike, not too and believes in Zone and her "traps", although meeting with the inexplicable phenomena some overpersuades him. Characters of heroes open up in their dialogues and monologues, in ideas and dreams of Stalker. A group passes Zone and it turns out on the threshold of Room, that Professor carried with itself small, 20-ти килотонную bomb, intend that to destroy Room - potential performer of desires of any despot, psychopath, scoundrel. Punch-drunk A stalker tries to stop with Professor fists. A writer considers that Room carries out the not comely considered wishes however, and subconscious, shallow, shameful. (And however, maybe, no execution of desires and far from it.) A professor stops to understand "why then in general to her to walk", unscrews and throws out a bomb. They return.