In this animated adventure, the beloved Mystery Inc. gang finds themselves in Chicago, where they are set to participate in a talent show. However, the excitement quickly turns into a mystery when a phantom starts haunting the opera house where the show is being held. As the gang investigates, they encounter a series of suspects and clues, leading to a thrilling and comedic unraveling of the mystery. Directed by Victor Cook, this film features the familiar voices of Frank Welker, Matthew Lillard, and Grey DeLisle. For those interested, it can be viewed for free on 123Movies / Movies123.