In the 22nd century, our world has changed beyond recognition. A new empire arose in the vastness of Eurasia, stretching from Europe to Japan, but life did not become calmer. Even the emperor's adopted son, Russian officer Ivan Nagaikin, cannot afford to relax. In Africa, in a clash with the militants of the Caliphate, he loses both legs, but thanks to high-tech prosthetics, he returns to duty. The caliphate is defeated, but Nagaikin is accused of genocide of Africans and exiled to... The spare world is a parallel reality, several centuries behind the Earth in development. Thanks to his military skills, as well as the genetically modified ermine Mirka who accompanied him everywhere, Ivan managed to survive. But the main tests were still ahead...