A市的平静被一场所谓“惩恶扬善”连环杀人案件 打破。犯罪份子自称复仇女神“厄里倪厄斯”通过黑客入侵 公安网络发送乱码预警邮件，实行暴虐凶残的交换杀人。公 安机关迅速响应，上级下令由刑警骨干冉粤、富二代警察唐 骏、安全信息高手程峰共同组建“909专案小组”，进行专 案侦破。专案组历经坚辛，抽丝剥茧，层层揭开“厄里倪厄 斯”交换杀人复仇计划的骇人真相。

A city is terrorized by a hacker who orchestrates brutal exchange killings in the name of justice. To stop the murders, a special task force led by Detective Ran Yue, Officer Tang Jun, and cybersecurity expert Cheng Feng is assembled to investigate and uncover the dark truth behind the deadly revenge plot.