In 2004, Broadway diva Kylie Swanson opened the musical ''The Haunting of the Opera'' (a reference to real-life musical ''The Phantom of the Opera (1986 musical)'') to a packed audience. However, that same night, she was murdered backstage by an unknown assailant wearing the mask of the play's villain, Opera Ghost. 10 years later in the present-day, Kylie's children Camilla and Buddy have grown up raised by Roger McCall, a former lover of Kylie's and the producer of a musical theater summer camp on the brink of bankruptcy. When Camilla hears that the camp will be producing a kabuki version of ''The Haunting of the Opera'', she decides that she will sneak into auditions one way or another. She manages to convince a camper overseeing the auditions, Joel Hopton, to let her in and Camilla easily impresses the stage director Artie and wins the lead role of Sofia - much to Buddy's dismay.