At the moment when the "sky fortress" made of steel and concrete collapsed, Gu Yuan thought that his life would end with endless darkness and despair. As the top engineer of the fortress, he witnessed with his own eyes how the betrayal of human nature destroyed the last hope of mankind.
However, when he opened his eyes again, he found that he had returned to a year before the end.
The sun is warm outside the window, and the world is still prosperous. But only Gu Yuan knew that a year later a super flare named "Judgment Day" would burn away civilization on the surface and drag the world into eternal night. What followed was a drastic change in the earth's crust, and humans were forced underground to survive in darkness and despair.
This time there are no naive illusions or pointless rescues.
All that was left in Gu Yuan's heart was the cold blueprint and burning ambition. He wants to use the prophet's memory for one year to build a truly underground city that will never fall, an abyss kingdom of his own.
He will become the master of energy, mastering the light and heat that drives the dark world.
He will become the embodiment of order, using absolute reason and power to formulate the only law of the abyss.
He will become the underground king that all survivors look up to, a lonely and eternal overlord.
When the doomsday bell rang, the earth turned into wasteland, and everyone wailed in the darkness, Gu Yuan was already sitting on his abyss throne, overlooking the era he created with his own hands.
This time I am neither a savior nor a survivor.
I am the abyss.
