In a province in southwest China, there is an isolated state-owned machinery factory built during the Third Construction period.
In the underground world, there is an eerie ancient city.
Several mysterious people who suddenly arrived led Feng Zheng and Liu Weihong, the security officers of the Zijiang Machinery Factory Security Department, into an excavation incident that was buried more than 20 years ago. In the deep underground ditch filled with corpses, what a hideous and terrifying past is hidden. 8030 Machinery Factory Underground City Incident... The terrifying truth is about to come.
