In a black market auction on a rainy night, Shen Jin, a top shadow assassin, vows to seize the "Eye of the Deep Sea" that contains clues about the arms dealer in order to track down his sister's whereabouts. Fu Hanzhou, the leader of the Fu Group, is determined to avenge the robbery of the cargo ship and is determined to obtain this gem. At the moment when the short blade and the silver chain clashed, the two discovered that the target had been blown up by a mysterious force - the "dark web" organization they were tracking was actually the same old enemy.
One travels through the darkness with ghostly body skills, and the tip of the blade is stained with blood just to find his relatives; the other controls the overall situation with a precise layout, chaining his throat just for the truth. From tit-for-tat to fighting side by side, the data flow of an abandoned factory, the arsenal of an island prison, and the life-and-death situation of cross-border tracking. Each confrontation deepens the bond between the two, but also brings to light a larger conspiracy behind the "dark web": the disappearance of Shen Jin's sister hides the key to the Fu family's old case, and the "freighter robbery" pursued by Fu Hanzhou is actually related to the death of Shen Jin's father.
When the blazing blade meets the sharp edge, will they check and balance each other, or will they achieve each other's success? Not only do they have to tear through the layers of disguise of the "dark web", but they also have to face the cruel choices hidden behind family ties and the truth - where will this life-and-death pursuit of the murderer push them in the end?
