"Esper and Starn are twin boys who live in a grim world that has been almost laid waste by massive volcanic explosions. Very little grows in Orchard, which used to be a fruit-growing area, but with the death of insects and birds, pollination of the fruit trees is a tedious and precarious undertaking. When the boys discover an intriguing old manuscript in a locked room in their apartment, which tells of gold on one of the forbidden islands the people...