The gang goes to a baseball match, and Macklemore is there to throw out the first pitch. But it seems that Macklemore is haunted by a ghost mascot, who soon appears and disrupts the game!

Scooby and Shaggy meet up with their biker buddy, Axl Rose, on a tour of famous roadside diners along iconic Route 66. However, they soon find themselves embroiled in a crazy spooky mystery involving three mud men.