Connecting the Two Worlds, a Coincidence of Circumstances Leads to Salvation

Fifty years ago, the sky shattered and cracks came. Monsters flood in like a tide, the world collapses, and order is reorganized. In response to this catastrophe, humans established a cluster of border guards, guarding the crack with a weapon called "Yinzhan", and called the unknown world on the other side of the crack "the other side". It was a dead place where only monsters roamed. Everyone thinks so. Until one day, a group of people like this came from the other side. They have the same appearance as humans, and possess combat skills far beyond those of humans. They claim to be from the other side of the rift, but they have a deep hatred for monsters. They improved the guide lamp, provided intelligence, and fought side by side with the border defenders. No one knows why they betrayed their own world, no one knows what their hometown has experienced on the other side, and no one knows what the "real enemy" they call is. People gave them a common name, Strangers on the other side. Meng Xima, an ordinary person working in a bookstore, accidentally became a border guard due to a crack invasion. He originally wanted to live a stable life, but gradually found that the eyes of those strangers had all fallen on him from unknown time. And in the crack, something more terrifying seems to be awakening.