In Xingang City in 2077, mechas have been deeply integrated into human society, and language has become the key to controlling the AI of mechas. In an incident where a training mecha suddenly self-destructed, Cheng Yan, a doctor of linguistics and military consultant, discovered a new type of attack method - semantic virus, which interferes with the logical judgment of the mecha's AI by implanting Internet slang, causing the mecha to lose control and even self-destruct.
Cheng Yan accidentally discovered that he had the special ability to restore tampered semantic instructions, and was involved in the conspiracy of a mysterious organization called "The Cheater". During the investigation, he gradually revealed the secret of his life experience: he is the son of a deceased semantic scientist, and has a "Wenxin Core" implanted in his body that can control all machinery. All of this is closely related to the ambitions of the multinational technology giant "Obsidian Group".
Cheng Yan joined forces with the members of the "Pure Words Group" to fight against the cheater organization and the Obsidian Group, launching a war involving language, technology and the future of mankind. In this war, he not only has to protect the city and civilization, but also faces the truth about his abilities and the mission on his shoulders.
