Hai-Tang, star of the Chinese Troupe, and Lieutenant Boris Borissoff,
adjutant to the Grand Duke, are in love. Boris is visited by Yvette, the Colonel's mistress and the main attraction at the Orpheum club, who has her eyes on the lieutenant. She reminds him that it was she who persuaded the Colonel to appoint Boris to his position, and warns him off "this Chinese girl" who could damage his career. Boris says that in that case he regrets the appointment. Yvette asks him to "retain only an ordinary sense of decency", and tells him to remember her warning. At the Grand Duke's farewell banquet the Chinese Troupe performs and Hai-Tang sings and dances. The Grand Duke lusts after her, and Boris is tasked with ensuring she "dines" with the Grand Duke at the Orpheum at 1a.m. She does not wish to do so, but concedes when she realises Boris will be disobeying orders if she does not. The Orpheum is cleared of all customers except the Grand Duke's army entourage. Boris and Hai-Tang arrive, and Boris is set as sentry outside the Grand Duke's door while he makes love to the terrified Hai-Tang. The Grand Duke becomes drunk and assaults Hai-Tang, but her brother Wang-Hu shoots and wounds him. The following day, Wang-Hu is sentenced to death. Boris intercedes and begs for mercy, but the Grand Duke signs the death warrant for Wang-Hu's execution at dawn. Boris persuades his officer friend Theodore Alexandroff to give Wang-Hu the chance to escape. However, Theodore is reassigned at short notice, so the escape cannot happen. Meanwhile, Hai-Tang has gone to the Grand Duke to plead for her brother's life. She reluctantly offers herself to the Grand Duke, who agrees and signs a reprieve of execution to be sent to the Colonel. Boris arrives at the Grand Duke's apartment, searching for Hai-Tang. She pleads with the Grand Duke not to let Boris see her there. Boris suspects she may be inside, but is sent away. The Grand Duke claims his prize and possesses Hai-Tang. Meanwhile, the Colonel is drunk and sleeping. His
orderly hands the pardon to Yvette, but she refuses to wake the Colonel to read it. The Colonel finally wakes and, almost too late, Wang-Hu is saved. Hai-Tang returns to her home with her honour disgraced and in deep depression. Boris is relieved to find her there and, not knowing her sacrifice, he tells her mistakenly that it was he who saved her brother. She thanks him and restates her love, but she has already taken poison and dies in his arms. ==Cast==