The final part of the Lost in the Tunnels trilogy. The action of the novel takes place immediately after the end of the novel “The Ring of Fire”. The main character and his friends set off through a secret tunnel, getting out of the destroyed city. Once on the surface, they learn about what is happening in the surface world and try to start a new life, forgetting about the Metro. However, in order to enter into a new life, they have to make a difficult decision...