It is Tokyo in 1939. On the Street of a Thousand Blossoms, two orphaned brothers are growing up with their loving grandparents, who inspire them to dream of a future firmly rooted in tradition. The older boy, Hiroshi, shows unusual skill at the national obsession of sumo wrestling, while Kenji is fascinated by the art of creating hard-carved masks for actors in the Noh theater. Across town, a renowned sumo master, Sho Tanaka, lives with his wife and their two young daughters: the delicate, daydreaming Aki and her independent sister, Haru. Life seems full of promise as Kenji begins an informal apprenticeship with the most famous mask-maker in Japan and Hiroshi receives a coveted invitation to train with Tanaka. But then Pearl Harbor changes everything. As the ripples of war spread to both families' quiet neighborhoods, all of the generations must put their dreams on hold---and then find their way in a new Japan.