At a ski resort, Shaggy and Scooby are saved from an avalanche of their own making by Chloe Kim! The avalanche uncovers a frozen caveman who is soon thawed and terrorizing the resort.

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!