A closed and isolated city hides a forgotten truth. A disaster decades ago isolated the city from the outside world, and everyone was told that the outside world had been destroyed. Every ten years, this isolated city will hold a "Day of Silence" - the entire city will be cut off from power, internet and communication, and everyone must spend 24 hours in their own residence. No one knows why, and no one dares to violate it.
One day, young reporter Lin Ruoxi received an anonymous letter from outside the city, which read: "Everything you know is a lie." In order to uncover the truth, she joined a secret investigation organization and discovered that the history of this isolated city hides a shocking secret about human nature, technology, and faith.
However, every step closer to the truth comes with more death threats. Lin Ruoxi must find hope among the lies in Gucheng, and at the same time face an ultimate choice: reveal the truth or protect the stability of Gucheng?
