Dystopian fiction meets classic adventure in this tale of twin brothers travelling to forbidden islands in search of gold.

Esper and Starn are twin boys who live in a grim world that has been almost laid waste by massive volcanic explosions.

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 can see from the coastline, they determine to go on gold-hunt. They manage to construct a glider that takes them far from their home territory, and so begins a whole new adventure for the boys, as they travel from island to island in search of gold, but they are about to discover that the quest for gold is not what they expect.