In the near future, the earth has encountered an unprecedented energy crisis, and the entire civilization has fallen into decline. At this time, a mysterious meteorite fell to the earth, and scientists discovered an outer space material-"spiritual crystal", which not only has the ability to preserve the soul, but can even communicate with the dead. Through this technology, humans have the opportunity to extend individual lives for the first time, load the souls of the dead into robot bodies, explore the universe through artificial intelligence and their symbionts, and solve resource crises. At the same time, the invasion of alien creatures is gradually approaching. At this crossroads of destiny, mankind must find a way for humans and technology to coexist harmoniously and defend their homeland.
