<p>After the king and his eldest son die, the kingdom of Landor is left without a ruler. Asta, the last surviving member of the royal family, stands in line for the throne.However, before he can claim it, he must fulfill a quest: find the legendary Key to

It is a world where environmental pollution has spiraled out of control. Most of the land is contaminated desert, and there are only a few pockets along the shore where people can live. Those inhabiting these oases are suspicious of strangers, and know no