"The hope for peace was just a fleeting dream..."

Hundreds of years ago, the peoples of Earth sank into endless wars – always fighting for power, glory, and land. But one day, everything changed when the first energy sources were discovered – crystals with powers that exceeded human imagination.

The richest and most influential people created the Sky Islands: seven duplicates of existing nations, high above the clouds. Only the Bloodland refused to move to the sky.

15 years after the great war, Naoki, a lively boy from Bloodtown, sets out to conquer the Sky Islands and create true peace – together with his friends.