On a rainy night, a death invitation from "Night Owl" dragged Cheng Mo, a former criminal investigation expert who had lived in seclusion for five years, back to the bloody whirlpool. In an abandoned church, a rich man was nailed to a cross, with the Latin word "Greed" carved on his forehead; on the roof of the ancient bell tower, a food industry tycoon was disemboweled and hung upside down, marking the crime of "gluttony" - the murderer used the "Seven Deadly Sins" as a model to recreate Cheng Mo's dusty old crime scenes, leaving behind a blood-lettered puzzle pointing to his father's "Seven Deadly Sins" unsolved case twenty years ago.
Cheng Mo was forced to cooperate with police captain Lin Xia, but was shocked to find that every deceased person was connected to the mysterious "Star Fund". The blacked-out group photo, the newspaper clippings from five years ago, the silver coins left by his father... All the clues formed a huge web, and in the center of the web was himself. When the hacker's niece Cheng Xiaoyu was kidnapped and his adoptive brother Zhou Zhengliang submitted a blood-stained paternity test, Cheng Mo discovered that twenty years ago his father, in order to cover up the fatal truth, pushed the fate of two generations into a cycle of sin.
