4. The Never Ending Race/Unburied Treasure

The Never Ending Race Red doesn't realize that she's passed the checkered flag, and Stinky and Dirty must catch up to her to tell her that the race is over (and give her the winners trophy)! Unburied Treasure Dirty unearths a mysterious chest and he and Stinky struggle to open it, but nothing works until they come upon a "key" discovery.