A young ballerina named Christine is given a position in the chorus at the Paris Opera House. Not long after she arrives there, she begins hearing a beautiful, unearthly voice which sings to her and speaks to her. She believes this must be the Angel of Music and asks him if he is. The voice agrees and offers to teach her "a little bit of heaven's music." The voice, however, belongs to Erik, a deformed genius who was one of the contractors who built the opera and who secretly built in the cellars a home to himself. He is the Opera ghost who has been extorting money from the Opera's management for many years. Unknown to Christine, he falls in love with her.
With the help of the voice Christine triumphs at the gala on the night of the old managers' retirement. Her old childhood friend Raoul hears her and remembers his love for her. A time after the gala, the Paris Opera performs Faust, with the prima donna Carlotta playing the lead. In response to a refused surrender of Box Five to the Opera Ghost, Carlotta loses her voice and the chandelier overhead crashes into the audience.
After the chandelier crashes, Erik kidnaps Christine to his home in the cellars and reveals his true identity. He plans to keep her there only a few days, hoping she will come to love him, and Christine begins to find herself attracted to him. But she causes Erik to change his plans when she unmasks him and, sees his face, which looked like the face of a rotting corpse. Erik goes into a mad frenzy, stating she probably thinks his face is another mask, digging her fingers in to show it was really his face, and shouting, "I am Don Juan Triumphant!" and crawls away, crying. Fearing that she will leave him, he decides to keep her with him forever, but after two weeks, when Christine requests release, he agrees, on condition that she would wear his ring and be faithful to him.
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