曾經意氣風發的刑警豪哥，數年前因一樁殺妻案的偵辦疏失而遭受打擊，再也不到前線偵辦。突如其來的『未成年少女砍人案』，卻再度將他捲入深黑的漩渦中。 豪哥起初只想草草結案，卻在針對嫌犯王佳穎的逐步調查中，發現少女處處充滿謎團，竟燃起他追求真相的慾望。 案件即將水落石出之際，王佳穎竟出現疑似附身的詭異狀態。即便所有人都反對他繼續深查，豪哥卻堅持已見，亟欲釐清所有線索，卻絲毫沒有發覺，他早已深陷謊言與陰謀所編織的陷阱中……

曾经意气风发的刑警豪哥，数年前因一桩杀妻案的侦办疏失而遭受打击，再也不到前线侦办。突如其来的『未成年少女砍人案』，却再度将他卷入深黑的漩涡中。 豪哥起初只想草草结案，却在针对嫌犯王佳颖的逐步调查中，发现少女处处充满谜团，竟燃起他追求真相的欲望。 案件即将水落石出之际，王佳颖竟出现疑似附身的诡异状态。即便所有人都反对他继续深查，豪哥却坚持已见，亟欲厘清所有线索，却丝毫没有发觉，他早已深陷谎言与阴谋所编织的陷井中……

Police detective A-Hao investigates a mysterious stabbing by a teenage girl who appears to be possessed by a malevolent force. Once a passionate detective, A-Hao retreated from the front lines several years ago after mishandling the investigation of a wife killer. By chance, he stumbles onto a mysterious stabbing allegedly committed by a teenage girl, which drags him back into the investigations unit. Initially, A-Hao just wanted to quickly close the case, but his investigation into mysterious suspect Wang Jia-ying gradually ignites his desire for the truth. As A-Hao edges closer to cracking the case, Wang Jia-ying begins exhibiting signs of demonic possession. Despite opposition from everyone around him, A-Hao insists on exhausting all possibilities to uncover the truth, not realizing he has already fallen into a trap weaved by lies and conspiracy…