In 1948, a nineteen-year-old Japanese pearl diver is in her fourth season of perfecting the techniques of her age-old occupation. But her dreams of spending her life diving in the waters of the Inland Sea are shattered when she discovers that she has leprosy. She knows that the shame attached to the disease is inescapable: rejection by her family is imminent, exile unavoidable. No more than two months elapse before authorities send her off to a leprosarium on the island of Nagashima, and although it is only seven miles from her home, it is a world away from all that is familiar to her. At once, she is instructed to forget her past, to strike her name from the koseki, the family register, and ordered to choose a new name...