Author Mohsin Hamid has an observation about how people migrate today: "Human existence is an existence of transience. We don't stick around, sadly, and we change from moment to moment."
The novel follows two lovers, Nadia and Saeed, who live in a fictional city that succumbs to a militant civil war. Though restrictions are soon placed their city, Nadia and Saeed are not stuck in their immediate location — mysterious doors begin to opening, allowing Nadia and Saeed to migrate from place to place instantly.
The novel is inspired by Mohsin's own migrant past — he has lived all over the world ever since he was a child.
"But I was feeling increasingly this resentment of or fear of migrants that cropping up in America and particularly Britain where I lived before. And when I went back to Pakistan, so many people told me they wanted to leave, they wanted to get out of Pakistan. They said 'Why did you come back?' The tension between those two things — my knowledge of the resistance against migrants that was growing and also the desire for migration that was also so strong — gave birth to this book."