When Shaggy and Scooby win tickets to WrestleMania, the entire gang travels in the Mystery Machine to WWE City to attend the epic event. However, after a mysterious ghostly bear appears and threatens to ruin the show, Scooby, Shaggy, Velma, Daphne and Fred must work with WWE superstars and divas -- including Triple H, John Cena, Kane, The Miz, Brodus Clay, Santino Marella, Sin Cara and AJ Lee -- to solve the case. WWE Chairman and CEO Vince McMahon also lends his voice.