In an era when yellow sand spreads over the remains of skyscrapers, Lin Ye is the last human being on earth. He guarded the underground shelter left by his fathers, sorting through the mountains of relics day after day, trying to piece together the fragments of the fallen civilization from yellowed photos and rusty chips. Until that rainy night, he found a strange line of coordinates in his mother's encrypted diary, pointing to a biological laboratory deep in the ruins of the city.
When he pried open the scratch-marked alloy door, Su Rui, who was sleeping in the cold storage cabin, suddenly opened her eyes - this girl who had been cryogenically preserved for twelve years had the same genetic sequence printed on her arm as in the diary. As Su Rui's fragmentary memories awakened, Lin Ye gradually realized that humans did not die from nuclear war or plague, but were sentenced to death by the "perfect evolution" they created. Those scientists who were recorded as "saviors" boarded the interstellar ark with selected elites long before the end of the world, and those who were left behind were nothing more than experiments to verify the survival rate of new species.
The energy in the shelter is about to be exhausted, the evolutionary genes in Su Rui's body are beginning to go out of control, and the mutated creatures wandering in the ruins are also approaching. Lin Ye must make a choice amid the sense of collapse brought about by the truth: should he carry his secrets to his end in despair, or should he use his remaining resources to ignite a glimmer of revenge or redemption for his abandoned kindred?
