In the years before and after World War II, some 400,000 people emigrated from Okinawa Prefecture in southern Japan, including a man who moved to Bolivia. His descendants include a 13-year-old grandson named Makoto, who struggles with feeling like an outsider in the country where he was born. Then, granddad and grandson get a chance to visit Okinawa together. The trip not only deepens their bonds, but also helps Makoto discover his family's roots - and another place he can call "home".