It is the year 2528.

Humans are still at war against evolved technology.

Humanoids with Psychic abilities were created by a sentient computer named "Dorothy". Dorothy used them to pollute the atmosphere with radiation to eliminate the human race. Rion, a young man with great psychic powers, defeated Dorothy 6 years ago. Now her followers are trying to revive her, and it's up to Rion to defeat the Last... Galerians.