Initially I thought the story was an analogy with the fall of the Islamic empire at the hands of the Mongols but it turns out to be the tale of a number of destitute Pakistani youth who had chosen to migrate to the communist countries, marry there only to eventually come back to their home city of Lahore in their declining age.
I found the narrative challenging my patience repeatedly, with every chapter a new story. There was also lack of any single story in the novel, with the objective of the novel remained a complete mystery to me right till the end. The whole narrative is highly nostalgic and filled with stereotypes. Russians and Germans are mean and detached while Pakistanis are loyal yet intrusive. The whole book could have been written as a long short story in my opinion.
In summary, each man is crafted and groomed by his culture, initially all the characters were Pakistani as they lived in Pakistan, but then they migrated to Russia where they lived a life of denial, in a perpetual state of nostalgia for their native land. Why they chose never to come back from time to time remains a mystery though. In the end they go back only to find out that they are aliens in their beloved Pakistan, so they return back to Russia.