An undercover mission that was supposed to end forced Lu Chengxuan to pick up Lin Ruoxi, who was covered in injuries and had incomplete memory but could accurately see through lies on the eve of his identity being exposed. When the two were targeted by the same dark force, they had no choice but to work together to save themselves amid lies, pursuit and loss of control. However, the memory she gradually recovered pointed to the truth that could overturn the entire city's underground intelligence network.