Shen Yi unexpectedly travels through time to ancient times and becomes the lowest-ranking constable in the Zhenfu Bureau. His superior, Niu Ben, repeatedly bullies him and even tries to pin the blame for his crimes on him. At the brink of despair, Shen Yi unexpectedly activates a secluded cultivation system and devotes himself to mastering swordsmanship. He kills Niu Ben and defects from the Zhenfu Bureau. Pursuit follows, leaving him no choice but to venture into the martial world while evading his pursuers and increasing his strength. Conflicts between sects and the warmth and coldness of human relationships unfold one after another. He gradually comes to understand the cruelty of this martial world and meets people worth protecting. From a lowly constable whose fate is controlled by others to a swordsman who dares to confront powerful enemies, Shen Yi must carve out his own path with the blade in his hand.