This was the debut for Wile E. Coyote and the Road Runner. It was also their only cartoon made in the 1940s. It set the template for the series, in which Wile E. Coyote (here given the ersatz Latin name Carnivorous Vulgaris) tries to catch Roadrunner (Accelleratii Incredibus) through many traps, plans and products, although in this first cartoon not all of the products are yet made by the Acme Corporation.
Join Scooby-Doo, Shaggy and the Mystery Inc. crew as they head to Chicago for Talent Star, a hit talent show in which Fred and Daphne are finalists with some high hopes. Unlucky for them, the competition is frightful as the show is being broadcast from an opera house with a history of horrors and a particularly vengeful phantom that has cursed the show's production.