Interpol Han Mengxi died accidentally while hunting down a serial murderer. When he woke up, he found that he had traveled to a fantasy world where orcs and humans coexisted. In this world, humans coexist with various intelligent monsters, and Han Mengxi discovered that he can understand the languages of all monsters! This seemingly gentle ability got him involved in a shocking conspiracy. As the only "other" in the capital who can understand beast language, Han Mengxi was involved in a series of strange beast murders. On the surface, monsters are attacking humans crazily; in fact, there is a long-planned subversive plan hidden. During the investigation, he met the arrogant white tiger princess, the cunning nine-tailed fox merchant, and the loyal guardian of the wolf clan. Each beast clan carries its own secrets. Han Mengxi relied on his extraordinary reasoning ability and talent for animal language to uncover the truth step by step: someone was secretly instigating a relationship between humans and orcs in an attempt to trigger an all-out war. And his gentle and kind nature makes him the only bridge between the two races. On this thorny detective road, he not only has to solve the mystery, but also conquers the mythical beasts from all sides and prevents a catastrophe that could destroy the world...