Six months after the signing of the peace agreement between Zhou and Wu, a vicious serial murder case occurred in Wu. The murderer's methods were extremely cruel. He killed many Zhou people in Wu and two more Zhou people after fleeing to Zhou. The hawkish prime minister of Zhou regarded the problem as a conspiracy of Wu and intended to raise troops to destroy Wu. Under the mediation of the sovereign state, Prime Minister Wu personally guaranteed that the murderer would be caught within three months. The story begins with Zhou Zhi taking charge of handling the case, and Wu Guo policeman Lan Jun assisting.
Concept: The freedom of love is imprisoned in the contradiction between countries