This book is set in the city and tells the story of an atypical detective team formed by Huo Mao Mao and others to repeatedly solve strange cases. The story is centered on four independent scroll-style cases, and the main mystery is hidden layer by layer. Each case not only sparks humor due to the conflict between characters, but also compactly advances the truth in the fog. There are foreshadowings between volumes, which reveal the shadows, power struggles and even the shady story of the urban underground. When the final answer is revealed, the team's growth, friendship, and humor are throughout, leading readers to deeply experience reasoning and justice in a relaxed and humorous way.