The Flintstones & WWE: Stone Age SmackDown is a 2015 American direct-to-video animated film starring The Flintstones. It is the second co-production between Warner Bros. Animation and WWE Studios following Scooby-Doo! WrestleMania Mystery. The film features Fred Flintstone, Barney Rubble and the whole Bedrock gang with stone age versions of WWE Superstars and Divas. It was released on March 10, 2015 by Warner Home Video and WWE Home Video.
It is the first new Flintstones production in over 14 years since On the Rocks, 55 years after the original 1960 series and also the first Flintstones film without the original creators William Hanna and Joseph Barbera, who both died respectively. The film marked the first time the character of Mr. Slate was voiced by someone other than John Stephenson.
When Fred Flintstone loses his family's vacation money, he comes up with a plan to get it back. He convinces friend Barney Rubble to become a professional wrestler, wrestling the likes of John Cenastone (John Cena), Rey Mysteriopal (Rey Mysterio), and The Undertaker, among others. Fred then becomes the booker of his own wrestling promotion to earn the money back. Numerous other WWE wrestlers and personalities (including owner/chairman/CEO Vince McMahon) also provide their voices for characters in the movie.