On the planet Triqueterra, nothing is permanent. Predators here pretend to be herbivores, herbivores pretend to be predators. In an instant, a lizard can become a piece of stone, and insects can turn into flying bullets that pierce a helicopter’s blister... A former guide, caretaker of a small biological station, Jayslav Vagosh, receives the task of transporting a group of researchers to a peripheral base. Nothing complicated, and Jayelav is no stranger to the tricks of local animals. But something goes wrong. Strange and sinister events occur one after another. Is the mysterious planet really playing all-in with people? Or has a third, unknown force intervened in the usual situation?