After the nuclear disaster, a dictatorship was established on Earth, rejecting any knowledge. The last surviving scientists flee Earth and happily reach the planet Astra. There they discover that the new world has also recently experienced the horror of a general war. And now two races coexist here - the former rulers of the planet and their slaves, artificially bred for entertainment. To survive, the colony of earthlings will have to learn a lot, gain allies and even discover new properties of the mind.