In a dusty library, in the quietest corner of a house in a Tokyo suburb, live the Little People: Fern and Balbo, Robin and Iris. Just a few inches high, sleeping in cigarette boxes and crafting shoes from old book jackets, they need only one thing from their Humans - a nightly glass of milk, served in a sparkling Blue Glass goblet, by a trusted young member of the Human family.But when the Second World War comes to Japan, bringing a dangerous new kind of patriotism, both Humans and their beloved Little People face a world they could never before have imagined. It will take great love, bravery, and a rather loyal pigeon, to bring their unique families back together once more...