After working for the Paris Opera House for twenty years, violinist Erique Claudin is dismissed. The owners believe that Claudin can support himself with the money he received from his work but that is not true. Claudin used his money for music lessons for Christine Dubois, a soprano whom he has fallen in love with. Hoping to earn some money, he decides to publish his music. However due to a simple misunderstanding, Claudin murders the owner of the publisher and get his face disfigured in the process. Hoping not to be found by the police, Claudin hides under the Paris Opera House in the sewers where he lives now. Determined to make Christine Dubois the greatest singer in all Paris, he will stop at nothing to do so from committing murders to causing the massive chandelier to crash below the unsuspecting viewers below.