Qi Zimu and Jiang Yanzhou have been together for years. They solve cases side by side. Jiang Yanzhou is the top official in the bureau, and his background is a mystery. Qi Zimu is a psychologist and a pathological personality. After dealing with fraud, missing-person, and falling-from-a-building cases, they both decide to fight evil with evil. They expect the bureau to crack down on them, but to their surprise, their friends Gu Ze'en, Qin Shuo, Lu Ya, Diegu, the Russian teenager Miroslav, whom Jiang Yanzhou calls Xiao Luo, and Ji Wangyu are all hiding their true strength. The most ruthless one turns out to be…
