In Tianjin in 1930, private detective Qi Yangyan received a seemingly ordinary person-tracing commission - a wealthy businessman wanted to find his missing son. But halfway through, he discovered that the "disappearance" was actually a disguise. The missing person was actually involved in opium smuggling cases in the concession, and was also related to several bizarre "spontaneous combustion" murders.
Qi Yangyan wanders between the Chinese community and the concession in Tianjin. He not only has to deal with the difficulties of concession patrols, but also has to avoid the pursuit of smuggling gangs, and also has to face the key truth that the client deliberately concealed. As the investigation progressed, he gradually peeled away layers of fog: behind the opium smuggling, there was actually a dirty collusion between foreign trading houses and local warlords, and those who died of strange "spontaneous combustion" were all people who knew the core secrets of the smuggling chain.
In this Tianjin Guard, where the boundaries between black and white are blurred and forces from all sides are intertwined, Qi Yangyan must repeatedly weigh between self-protection and investigation, and do his best to track down the mastermind behind the scenes. But when the outline of the truth gradually became clear, he was caught in a dilemma - if the truth was revealed, the collapse of the collusion between the warlords and the trading houses might lead to greater chaos and bloodshed in the concession; if he chose to remain silent, he would be sorry for the innocent souls who died in vain, and would go against his original intention of being a detective.
Intention: Intention to be added
