It is a new dawn for mankind. The Shizuna Drive has brought clean, limitless energy and launched humanity forward into an age of prosperity. But even in this Eden of technology, there lurks the shadows of envy and greed. Big Fire is one such evil force, a secret brotherhood whose only goal is to drive the world towards chaos. Protecting the peace are the Experts of Justice, a team of operatives assembled from around the golbe to stop the ultimate disaster of The Eternal Night. The key to everything is the bravery of their newest member, a boy named Daisaku Kusama, and the mighty machine he commands.