When the deadly new drug "Phantom" quietly spread, triggering a series of vicious incidents, Gu Ye, the leader of the provincial anti-drug detachment, was ordered to investigate, but found that he had stepped into an abyss far darker than imagined. The rival "Dragon King" group is well-organized, highly skilled, and cruel in its methods. Conventional investigation methods have been repeatedly frustrated, and all the comrades who have been undercover have died tragically.
After witnessing the death of his comrades, and bearing the huge pain of his former lover Ye Shen also sacrificing his life in the undercover mission, Gu Ye resolutely asked for help, tore himself apart with his own hands, transformed into a cruel and dangerous outlaw "Gray Wolf", and sneaked into Longtan. In the dangerous drug den, he was walking on thin ice every step of the way between suspicious heroes and crazy criminals. However, when he finally approached the core of power, he was shocked to find that the most coquettish and mysterious phantom next to the "Dragon King" - "Sister Hong" - actually overlapped with the appearance of Ye Shen who had long passed away in his memory...
Truth and lies are intertwined, loyalty and betrayal are at stake. This is a desperate battle to pursue light in a drug network, and it is also a soul torture that faces the abyss and is stared at by the abyss. Gu Ye must make a choice between destroying the evil empire and saving the soul of his beloved, and the answer may be more cruel than destruction.
