Detective Lin Hao dies under mysterious circumstances, and every clue is deliberately wiped away. His brother, fellow detective Lin Yan, refuses to accept a rushed closure.
A sudden kidnapping traps everyone connected to the case in a sealed room filled with lie-detection torture devices. A confession game that wagers lives begins.
Every lie brings a deadly electric shock, and every choice hides a trap. As these sinners tear into one another, an illegal organ-harvesting operation gradually comes to light.
Someone in the shadows has carefully set the pieces in motion, and everyone is just a disposable pawn. As Lin Yan fights to survive the deadly game and gather evidence, he follows a trail of clues to track down the true mastermind hiding behind elite capital and a cruise ship in international waters. In the depths of the abyss, no one is purely seeking revenge.