When Amaterasu Takahashi opens the door of her Philadelphia home to a badly scarred man claiming to be her grandson, she doesn't believe him. Her grandson and her daughter, Yuko, perished nearly forty years ago during the bombing of Nagasaki. But the man carries with him a collection of sealed private letters that open a Pandora's Box of family secrets Ama had sworn to leave behind when she fled Japan. She is forced to confront her memories of the...

Twelve-year-old Hanako and her family, reeling from their confinement in an internment camp, renounce their American citizenship to move to Hiroshima, a city devastated by the atomic bomb dropped by Americans.