Once upon a time, before the emergence of clans, an expedition set off to the center of the zone. They reached the monolith, and in memory of this raid they took fragments of the monolith from the sarcophagus. Many years passed, and suddenly the fragments were remembered. The stalkers who took part in that campaign began to die, and the zone began to behave unpredictably. What is happening in the zone? After the next ejection, the path to the artifact fields opens, and this is also part of the puzzle. The only question is who will put all the pieces together first...