The year is 950 NE. Nine hundred and fifty years have passed since the sun's dramatic decay forced humanity to abandon their home planet. After nearly depleting the resources of the entire solar system, humanity built the magnificent Noah's Ark—carrying the last survivors, it drifted through the cosmos for nine hundred years before finally finding this planet. On this planet, named "Alpha", humans discovered numerous relics of an alien civilization: ruined cities, underground towers, temples reduced to rubble... all speak of the civilization's former glory, but now, the beings who created them are unknown. The creators of the relics have vanished, but vast resources and technology far exceeding human standards are buried...