In 21th century the Earth became overpopulated, and humans began building colonies in the solar system. Technological expansion led to widespread pollution; in order to counter it, a powerful computer Naious was built. One century later, humans became completely dependent on Naious, and that was when it stroke unexpectedly. European cities were reduced to ruins after a single attack. The fighter spacecraft ASP and its pilot Manami Katagiri were dealing with a possible rebellion on Jupiter when it became clear that the future fate of humanity depends on them.

In 21th century the Earth became overpopulated, and humans began building colonies in the solar system. Technological expansion led to widespread pollution; in order to counter it, a powerful computer Naious was built. One century later, humans became completely dependent on Naious, and that was when it stroke unexpectedly. European cities were reduced to ruins after a single attack. The fighter spacecraft ASP and its pilot Manami Katagiri were dealing with a possible rebellion on Jupiter when it became clear that the future fate of humanity depends on them.