As the case of the murders in the capital comes to a close, Mo Xi takes custody of Gu Mang, the traitor who was once his lover. With his betrayer now firmly in his grasp, Mo Xi believes he can manipulate Gu Mang into revealing the hidden secrets within his broken mind. Yet one question continues to haunt Mo Xi: Is Gu Mang pretending, or has he truly forgotten everything?

Tortured by specters of the past and bound by demands of the present, Mo Xi begins to lose hope of ever gaining the satisfaction he craves. But when Gu Mang's memories finally do surface, what-or who-will he remember?