Travel Through the Future Timeline and Save the Present World

In the mecha world, creatures from the cave invaded, feeding on humans and killing hundreds of millions of humans. There are also powerful human mecha divisions who have formed a legion, supported their own troops, and colluded with the underground to seize the few remaining resources of Blue Star. Internal and external troubles, in troubled times, human lives are harvested like weeds, and the human race is destroyed. Just ten minutes before his death, Zhou You suddenly discovered that he had the ability to travel through the timeline...