The Rule You Can't Break

The Rule You Can't Break Plot:

Fresh graduate Lin Xiaoman joins a century-old publishing house. On her first day, old colleagues warn her repeatedly: "Never touch the red filing cabinet in Room 302." Unable to curb her curiosity, she sneaks into the office at night and finds letters between the late editor-in-chief and a missing author—ten years ago, the sensational novel *Unsent Letters* was based on the editor’s ex-girlfriend, whom he accidentally killed. Everyone who tried to investigate the truth "vanished into thin air" overnight. When Xiaoman holds the letters and prepares to call her best friend for help, her phone lights up with an anonymous message: "You’ve broken the unbreakable rule. You’ll be the next to disappear."