As the show gets underway, Mr. McMahon unveils the WWE Championship belt, the title for which was vacated due to Kane's previous match being overturned and is now available over the weekend.

Inside, they discover a hidden room containing hypnosis books, schematics for an EMP device, and a calendar confirming the culprit plans to target WrestleMania.

After the gang inform Richards of their discovery, Cookie advocates for WrestleMania's cancellation, but Fred suggests using the event to lure and capture the Ghost Bear.

The Ghost Bear soon arrives and wreaks havoc, but the wrestlers use pyrotechnics to illuminate the arena while Scooby and Kane continue their fight.

When the Ghost Bear attacks the ring, Scooby and Kane join forces with Ruben, Cena, and Cara to defeat it and unmask it as Cookie.

Feeling his career ended too soon, he reveals that he sought to steal the WWE belt, tarnish the organization's reputation, and built an exosuit to help him achieve his plot.

Slaughter, Jimmy Hart, Big Show, Alberto Del Rio, Cameron, Naomi, and the Young Justice incarnations of Wonder Girl, Artemis, Zatanna, and Miss Martian all make non-speaking cameo appearances.

[5][6] On August 14, 2012, Warner Bros. and WWE Studios announced that they would co-produce a Scooby-Doo animated feature that will find Scooby and the gang solving a mystery at WrestleMania.

The film also features the WWE entrance music themes of The Miz, Mr. McMahon, John Cena, Kane, and AJ Lee.

[10] However, on July 23, 2015, WWE terminated their contract with Hogan due to racist comments, leaving speculation as to his appearance in the film.