Year 2340.

Space is divided into two systems.

The inner system, centering around Earth is controlled by NGC, the successors of a previous galactic war.

The outer system, composed of space colonies and deserted planets is occupied by CRF (rebel forces) and other deep space creatures.

In the distant outer systems, M is a simple mechanic scraping a living in space colony NGC-13. After his parents' mysterious deaths 8 years ago, he survives by stealing and swindling NGC pilots.

One day, he sees a strange girl in the colony shipyard and decides to follow her...