When Headmistress Bloodgood announces that Monster High's next musical will be Phantom of the Opera, she goes all out-bringing in a real haunted theater to set the stage. Draculaura lands the role of Christine, while Clawd is cast as the tortured Phantom. Meanwhile, Clawdeen takes on the humble job of costume designer-until a dangerous accident caused by the mysterious haunting leaves Clawd injured. Clawdeen steps up to take his place, and as she and Draculaura rehearse, their onstage chemistry ignites something undeniable between them. But with every rehearsal, the tension rises-both from the eerie presence in the theater and the growing feelings between Clawdeen and Draculaura. As the lines between performance and reality blur, their friendship and potential romance are put to the ultimate test. Will they be able to finish the show, uncover the identity of the phantom haunting them, and figure out if their bond is meant to stay in the friend zone-or become something more?