女子神秘失踪牵扯连环血案，变态“恶鬼”隐匿20年竟在身边？养猪场兽医于娜夜行失踪下落不明，线索指向20年前犯下5起骇人听闻连环奸杀案的“恶鬼”，惨绝人寰的割耳手段令人毛骨悚然，然而真凶却人间蒸发？当年身陷此案的警察冯泰山决心揪出“恶鬼”，并寻找兽医于娜的踪迹，其养猪场雇主闫慧茹一家，大儿子张晓军与小儿子关小伟行为怪异疑点重重，每个人似乎都有着不为人知的一面，调查逐渐陷入困境。凶手隐匿，极恶滔天，然而在真相背后，隐藏着一个更加血腥残忍的黑暗秘密……

A woman's mysterious disappearance entangles a series of bloody crimes. Has the psychopathic 'Evil Ghost,' hidden for 20 years, been lurking nearby? Yu Na, a veterinarian working at a pig farm, vanishes without a trace during a nighttime walk. Clues point to the 'Evil Ghost,' a killer who committed five horrific serial rape-murder cases two decades ago. The gruesome ear-cutting method used in the crimes sends chills down the spine, yet the perpetrator seemingly vanished into thin air. Feng Taishan, a police officer haunted by the unsolved case, vows to unmask the 'Evil Ghost' and find Yu Na. Suspicion falls on Yan Huiru, the owner of the pig farm, and her sons—Zhang Xiaojun and Guan Xiaowei—whose eccentric behavior and hidden motives deepen the mystery. As the investigation hits a dead end, the killer remains hidden, their unfathomable evil looming large. But behind the truth lies an even bloodier and more sinister dark secret…