Before she met Il-sun in an orphanage, Gi was a hollow husk of a girl, broken from growing up in one of North Korea's forced-labor camps. A mathematical genius, she has learned to cope with pain by retreating into a realm of numbers and calculations, an escape from both the past and present. Gi becomes enamored of the brash and radiant Il-sun, a friend she describes as "all woman and springtime." But Il-sun's pursuit of a better life imperils both girls when her suitor spirits them across the Demilitarized Zone and sells them as sex workers, first in South Korea and then in the United States.

This spellbinding debut, reminiscent of Memoirs of a Geisha, depicts—with chilling accuracy—life behind North Korea's iron curtain. But for Gi and Il-sun, forced into the underworld of human trafficking, their captivity outside North Korea is far crueler than the tight control of their "Dear Leader." Tenderhearted Gi, just on the verge of womanhood, is consigned to a fate that threatens not only her body but her mind. How she and Il-sun endure, how they find a path to healing, is what drives this absorbing and exquisite novel—from an exciting young Algonquin discovery—to its perfectly imagined conclusion.