Three years ago, the bridge built by Yu Group collapsed in an earthquake, causing countless casualties. The foreman Lin committed suicide in a car accident, bringing the whole case to an end in suspense and suspicion. Since the investigation of the broken bridge case has resumed recently, the president of Yu Group, Yu Xiao-Man, is suspected to kill herself in the same way as Lin. As the four protagonists involved in the case make their own statements, the conspiracies gradually come to light.

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To get rid of crime and regain her husband's love, Yu does not hesitate to get her hands dirty. To regain dignity and property, Li decides to kill his wife to be free once and for all. To become forever rich, the beauty Tang ruthlessly betrays her lover and the new one. To win Tang's heart, the geek Jiang commits a crime in madness and fearlessness….

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Yu's death reveals a series of conspiracies among those who are driven by their own desire; everything is vaguely related to the broken bridge case. Who in the end is able to fulfill his wish and becomes the real murderer?