Year 3099, Earth came to its worst natural condition. With the extreme global warming, sudden collapse of the ecosystem, and widespread famine and hunger, triggers worldwide conflicts and wars. In the middle of chaos, the richest and most powerful people joined forces to build a moon-base as an escape from the dying Earth. The human habitation on the moon marks the beginning of the MOONLIGHT era. MOONLIGHT becomes known as the first super society, the next generation of man.