Pit violinist Claudin hopelessly loves rising operatic soprano Christine Dubois (as do baritone Anatole and police inspector Raoul) and secretly aids her career. But Claudin loses both his touch and his job, murders a rascally music publisher in a fit of madness, and has his face etched with acid. Soon, mysterious crimes plague the Paris Opera House, blamed on a legendary "phantom".
Costumes are used by the theatre performers to depict Mongolian people. The characters don’t specifically do yellowface but they wear stereotypical Asian masks with yellow skin