Ammi, a pregnant 24-year-old, flees New Delhi with millions of Muslim migrants in the early hours of the 1947 Partition of India, clawing her way through a controversial caste system and into the heart of Lahori society. A family broken by betrayal. Two of Ammi's beloved sons immigrate to the United States and secretly marry dazzling, contemporary American brides. One bride converts to Islam. The other commits apostasy, the sin of all sins. Three women who stand to lose everything. The collision of two belief systems—two worlds—come to a head as Ammi, Carolyn, and Ivy fight to keep their own marriages, families, and futures secure.