When Fred Flintstone loses the family's vacation money, he hatches one of his hair-brained plans to get it back. It's a sports entertainment spectacle that involves throwing his best bud, Barney Rubble, into the wrestling ring with the likes of John Cenastone (John Cena), Rey Mysteriopal (Oscar "Rey Mysterio" Gutiérrez) and even The Undertaker, with Fred himself as event promoter! The crowds roar, the "clams" are pouring in from ticket sales and even Mr. McMagma (Vince McMahon) is taking notice of all the hoopla.