Well, it's about a Chinese American boy who befriends a Japanese American girl during the war - when the Japanese were thought to be spies and were being sent to interrment camps. His dad vehemently protests the friendship - he hates the Japanese. It's a coming of age story as well as historical fiction.
Anyhow, the story is set in the 80s when the boy is grown (with flashbacks every other chapter), and an old Japanese hotel is unboarded for restoration. They find a bunch of personal items that were hidden when the Japanese were sent away, and the boy (now a man) decides to look through the items to try to find the belongings of his old friend.
I've read 39 books so far this year, and this book trumps all of them.