In the near future, a network of orbital weather control satellites was created to prevent an environmental disaster. But, the satellites malfunctioned triggering a catastrophic event known as simply "The Event", in which firestorms ravaged the surface of the Earth. A select few were chosen to go into cryogenic stasis and rebuild society, while the rest were left to die. After a few decades, two civilizations began to emerge. Those who went into stasis would reawaken and form the technologically advanced Echelon, while those who were left behind would adapt to the new environment and become the tribal Sai.