The habitual earthly world, favorable for the habitation of human creatures, was finally destroyed by a thoughtless, extremely destructive for nature, active activity of modern, rapidly developing in terms of invention the newest technologies of civilization. Irrevocably ruined representatives of the surrounding plant life and numerous varieties of all kinds of animals. The atmosphere that protects carefully the once-green planet, is destroyed without a trace and the chances of recovery. A devastating catastrophe was caused by armed conflicts that ended with the use of deadly nuclear weapons, which almost instantly destroyed any signs of life on the surface of the dying Earth. Small groups of people who managed to avoid death during a large-scale tragedy, established reliable shelters in the dungeons. Scientists do not cease to hope for the possibility of creating a way to clean the surface of a ruined planet from deadly toxins, get rid of harmful radiation that kills instantly. Once during countless experiments it is possible to get a unique gene, carriers of which can freely exit and breathe harmful substances without harming one's own well-being. However, for the application of an amazing invention, complex equipment is needed, which is available in a large, lifeless city. A detachment of well-trained volunteers sets off on a dangerous journey to remote areas inhabited by dangerous creatures in order to obtain the necessary items for further research allowing humanity to hope for a prosperous future and a return to old life.