No one knows where Zone X came from - a deadly territory teeming with anomalous phenomena. Monsters do not run there, trophies are not brought from there, and hunters for profit do not hunt there. A secret government organization sends one research expedition after another to the Zone, but most often they do not return - or return, but subtly and terribly changed. Will the new, twelfth, expedition to the Zone be able to achieve what its predecessors failed to do and reveal the secrets of this damned place? Leaving behind their names and previous lives, four women - a psychologist, a biologist, a topographer and an anthropologist - set off to meet an alien, inhuman mystery...