The former king of special forces - Lin Feng, codenamed "Shadow", was forced to retire because he refused to perform gray tasks and returned to his hometown of Yunhai City. However, what awaits him is not a peaceful life, but the cruel reality that his father is seriously ill and bedridden, and the family business has been maliciously annexed by the Zhou Group. The investigation revealed that all of this was a loan shark trap set by Zhou Hao, the young master of the Zhou family.
In order to take revenge, Lin Feng returned to his iron-blooded methods and during the investigation, he rescued his high school classmate Su Yurou - now a gentle and tough neurologist. The two reunited and their old relationship rekindled, but threats from Zhou Hao followed one after another. At the class reunion, Zhou Hao led others to humiliate Su Yurou, and Lin Feng thundered and shocked the audience, but also completely angered the Zhou family.
As the investigation deepened, Lin Feng discovered that behind the Zhou Group, there was actually collusion with the mysterious organization "Netherworld", and the leader of "Netherworld" Chen Feng was actually his former "sacrificial" comrade, now transformed into a revenge demon. Facing the business shady, the pursuit of underground forces, and the betrayal of his former comrades, Lin Feng must integrate resources, join forces with his new ally Zhao Tiezhu (former security captain) and his old comrade Zhang Meng, and start a battle of blood and fire in the urban jungle.
