In the distant future, an expedition of space explorers lands on a planet suitable for life. However, the processes of life evolution on the planet are strange. Here, mammals, dinosaurs, primates and people of the Stone Age coexist at the same time.
As it turns out, such development of life on the planet is a colossal experiment conducted by aliens who "accelerated" the evolution of the planet in such a way as to find out what happens to higher forms of life at the peak of their development, for which they paid: having taken possession of the weapon of the future, the inhabitants of the planet killed their "creators"... A similar danger also awaits earthlings exploring the planet.
