Many citizens would like to see with their own eyes the events of ancient history. However, computer graphics and artistic fiction do not give a real picture of the era when the planet was inhabited by graceful giants. For the sake of implementing a bold project, 10 convicts become residents of prehistoric reality. They fall into the artificial world in which live dinosaurs live. With these creatures it is impossible to agree on parity. Terrible murder machines are ready to deal with their neighbors at any time. Therefore, hardened criminals have to intensify their instincts.