From Maintenance Company to Ace Pilot

In 2179 AD, the shadow of the third oil crisis and the complete depletion of traditional fossil energy enveloped the world. Although controllable nuclear fusion technology has achieved breakthroughs, the core fuel helium-3 reserves are scarce, and the "source soil" of new solid-state energy under deep-sea combustible ice and frozen soil has become the strategic core of competition among countries. Four super political bodies stand side by side, proxy conflicts and border frictions continue, and mankind stands on the edge of all-out war.