In a causal war that spans time and space, the reborn Lu Chen and the guqin girl Su Huanyan accidentally awaken the "Twin Vulnerability" - they are not only experimental subjects hunted by observers, but also the only rebels who can rewrite the underlying code of the system. Holding a bronze compass and traveling through thirty-seven parallel worlds, including the Mechanical Wasteland, Mirror Academy, and Gear Temple, the two shuttled through the swarm of mechanical insects and the torrent of magical data, and gradually uncovered the truth about the observer's use of the "Causal Law Harvest Plan" to rule the multiverse.
