Zhang Chun

Tang Ren and Qin Feng travel to Japan to investigate the death of a mafia head. As they suspect foul play, they engage in a battle of wits against foreign detectives.

Driven by the desire for the huge reward, Tang Ren tricked Qin Feng to New York, to attend the World Detective Contest. Later on, behind the crazy competition, Qin and Tang discovered the real hidden facts of this contest.

The fantastical and magnificent city of Chang'an, a city woven with gears and mechanisms, is home to both humans and demons living side by side beneath its upturned eaves. Di Shao, a genius young man aspiring to become "Chang'an's Number One Detective," possesses exceptional crime-solving skills and a sharp tongue; while Asa, a rookie wolf demon constable, is formidable in martial arts yet kind-hearted. A bizarre murder case forces these two adversaries to team up, embarking on a hilarious and bickering detective journey. As clues point to the heart of the city, can this unreliable duo protect the joyful daily life of this fantastical city? And what earth-shattering secret lies hidden behind the bustling and prosperous Chang'an?

Strange crimes occur in Thailand as the ranking for the world's best detective sees a shift. New detectives come into the picture to tackle three difficult cases.