百年之前,一系列的连锁巨变摧毁了多数的地球文明,将世界带入了无尽的黑暗时期。剩余的幸存者试图回到过去改变引起这一切毁灭事件的进程。Over one hundred years ago, a cataclysmic chain of events plummeted the earth into the dark ages which destroyed most of civilization, and the remaining few survivors attempt to change the course of events that led to the destruction.