The sun is dead. In 2045, an abnormal solar flare destroyed the global electromagnetic system, the surface temperature plummeted to minus 50 degrees, and eternal night fell.
Lin Mo died once. In his previous life, the underground shelter he worked so hard to build was ultimately destroyed by the betrayal of his companions and the greed for power. He fell in a pool of blood and watched as the fortress he built with his own hands became a trophy for others.
When he opened his eyes again, he returned to the seventh day before the end.
This time, he was reborn with the memories of three years in his previous life and a mysterious system called "Ecological Ark". He wants to build an underground ecological city that can accommodate one million people in an abandoned mine. Vertical farms, artificial sunlight, controllable nuclear fusion - he wants to move human civilization from the surface to the ground step by step.
But the real enemy he has to face is never the extreme environment and mutant creatures, but the greed and fear hidden deep in the human heart.
Will the person who stabbed him in the last life stab him again in this life?
