Scooby-Doo! Mask of the Blue Falcon

Plot

Mystery Inc. travels to San De Pedro, California for the "Mega Mondo Pop! Comic ConApalooza" so Shaggy Rogers and Scooby-Doo can enter a costume contest as their favorite superheroes, the Blue Falcon and Dynomutt. There, they meet Jennifer Severin, a film producer in the midst of making a dark and gritty Blue Falcon film; its leading actor Brad Adams; Hank Prince, the owner of a comic book store that Shaggy frequently visits; his nephew Austin; Owen Garrison, the washed-up star of the original Blue Falcon television series; and Jack Rabble, a former Combat Bots champion. When Shaggy and Scooby try to get Garrison's autograph, he instead rants to them about how Severin's studio intends to remove all traces of his series in preparation for the film. Amidst a screening for its trailer, Mr. Hyde, an antagonist from the Blue Falcon television series, emerges to terrorize the conventioneers.

As Mystery Inc. offers to investigate, most of them consider Garrison to be the culprit, but Shaggy and Scooby refuse to believe them. Using surveillance footage, they discover that Severin stands to gain increased publicity for her film from the incident while Adams dislikes his role in it and is hoping for an opportunity to resign. Realizing Hyde's attacks were based on episodes of the Blue Falcon television series and that his next attack will involve a mutagenic ooze capable of transfiguring living creatures into monsters, Shaggy and Scooby later enter a storage room, where they stumble upon Hyde's lair before he chases them out and attacks the city with a harmless placebo of the ooze. Having been humiliated during the attack, San De Pedro's mayor Ron Starlin closes the investigation, relinquishes Mystery Inc.'s services and revokes their access to the convention.