Amy is a thirteen-year-old Japanese-American girl who lives in Hawaii. When her great-grandmother falls ill, Amy travels to visit family in Hiroshima for the first time. But this is 1941. When the Japanese navy attacks Pearl Harbor, it becomes impossible for Amy to return to Hawaii. Conscripted into translating English radio transmissions for the Japanese army, Amy struggles with questions of loyalty and fears about her family amidst rumors of internment camps in America -- even as she makes a new best friend and, over the years, Japan starts to feel something like home. Torn between two countries at war, Amy must figure out where her loyalties lie and, in the face of unthinkable tragedy, find hope in the rubble of a changed world.