6x1 - Scooby-Doo and Scrappy-Doo

It's Scooby's birthday and the gang plans a surprise party for him at a TV station with a special show. All of his friends are there. They share a mystery story that happened years ago when they captured the butler of an elderly rich woman who tried to steal a dimond from her years ago posing a horrible creature called the Red Skull. Suddenly the Red Skull is back and he's out for revenge.