S.T.A.L.K.E.R.: Call of Pripyat takes PC gamers once again into the vicinity of the Chernobyl nuclear reactor that exploded in 1986. This so-called "Zone" is a highly contaminated area cordoned off by the military and now is combed through by the so-called s.t.a.l.k.e.r.s, modern fortune hunters, in search of unique artefacts. In the role of Agent Alexander Degtyarev, who is dressed up as s.t.a.l.k.e.r., the player has to investigate the mysterious disappearance of five military helicopters and thereby stand one's ground against the various s.t.a.l.k.e.r. groups.