When it became clear that the virus turning people into mutants was spreading through moisture, a group of surviving people made a rush from humid St. Petersburg to one of the driest places on Earth - Egypt, where they founded a new settlement. Thirty years later, Egyptian colonists, diligently preserving the knowledge and technologies of a bygone civilized era, learned to effectively resist predatory creatures and wild infected, destroying enemies in dozens and hundreds. However, their quiet life comes to an end when they receive information that somewhere in the north there is a vaccine against the virus...