Director: Cheng Teng / Huang Min
Screenplay: Zhang Chun / Cheng Teng
Cast: Lei Songran / Zhang Cheng / Cai Haiting / Zhang Zhe / Wang Kai / Fan Zhechen
Genres: Comedy / Animation / Mystery / Fantasy
Country/Region of Production: Mainland China
Language: Mandarin Chinese
Release Date: 2026-08-22 (Mainland China)
Runtime: 117 minutes
Also Known As: Chang’an Mystery Files / Demon Agent / Mystery of Chang’an
Synopsis
In the fantastical and dazzling city of Chang’an during the Tang dynasty, where intricate gears and mechanisms intertwine, humans and demons live side by side beneath soaring roofs and upturned eaves. Di Shao is a genius young man who dreams of becoming „Chang’an’s greatest detective“. His crime-solving skills are exceptional, while his sharp tongue is even more so. A’Sa, a wolf-demon constable just starting out, is remarkably skilled in combat but pure of heart. A bizarre murder forces these two mismatched rivals to team up. Amid constant bickering and laughter, they embark on an extraordinary mystery-solving adventure. When the clues point directly to the heart of the city, can this unreliable duo preserve the joyful everyday life of this fantastical city? And what shocking secret lies hidden behind bustling, prosperous Chang’an?