A group of powerful and corrupt individuals of varying backgrounds turn Doma City into a 'hell island', where high schooler Xiaodi is brutally raped and murdered. Fifteen years later, these manipulators meet a series of gruesome deaths. Fang Tianyang, who witnessed the murders, and police officer Fang Zhengnan delve into the investigation, only to discover that this anonymous killing is not simply revenge, but a belated indictment. A series of murders, layers of darkness—how many untold sins lie hidden behind the black web woven by power, money, and desire?

A story that follows three children from a coastal town who unintentionally film a murder scene. As the kids become involved with the suspect, it opens up a case that is far more complicated than it looks and entraps several families into an unpredictable outcome.