Five years ago, Zeng Muyun was a financial genius standing at the top of China. A well-planned conspiracy ruined his reputation and forced him to retire from the world. Five years later, he returned with a mysterious golden finger - the "causal deduction system". This system allows him to see the countless possibilities extending behind every decision, like laying out a sophisticated causal network on the timeline.
However, Zeng Muyun, who returned, discovered that his former opponents had used "substitutes" to lay a dragnet in the city's underground world. The ruffian gang "Black Python Gang" is running rampant, and behind every gangster there is the shadow of a substitute organization. What's even weirder is that these stand-ins are not just simple scapegoats, but specially trained "chess souls" - each of them has an independent mind, but closely serves the mastermind hiding in the dark.
Zeng Muyun chose to intervene in this chess game with a gentle and gentle attitude: on the surface, he is just the owner of a recycling bin that is on the verge of bankruptcy; secretly, he is using his golden fingers to deduce the origin, purpose and weakness of each local ruffian. His opponent is not just one person, but a network of substitutes covering the entire city's underground economy. Every action and every confrontation tests his wisdom and strategy.
When the substitute begins to backfire, and when the mastermind behind the scenes gradually emerges, Zeng Muyun will transform from the gentle disguise into a gentle scum, and use the most ingenious strategy to turn the chess game set by his opponents into a grave for them.