Gu Xunzhou, a doctor of drama, encountered a strange identity-changing rule on his first night at the Century-old Hanging Bell Theatre: the actors' code ordered him to play the villain in the third act, but the audience manual said the villain was actually the protector. The copper role-changing timer he wears forces him to switch identities every hour. When he becomes an audience member, the villain's cold lines remain in his mind. When he discovered that the "protector" clause in the audience manual was actually written thirty years later, Gu Xunzhou suddenly realized the loopholes in the rules. At the climax of the third act, his left hand held an old play ticket stub soaked in the blood of the senior actor Chen Mozhi, and his right hand held the actor's code of conduct, declaring to the ghosts in the audience with his superimposed identity: "At this moment, I watch and I act, and the authenticity depends on the heart!" The ancient theater trembled, and faded anti-Japanese secret reports fell from the dome - it turns out that the so-called villains are all unknown heroes in the intelligence station who use the play as a code and protect the dawn with blood and tears.
