Shaggy's uncle disappears and leaves Shaggy with a billion dollars, so Shaggy...
Shaggy & Scooby-Doo Get a Clue!
Season 1 Episode 13: Operation Dog and Hippie Boy
Scooby and Shaggy head off to Dr. Phibes' lair on information that Phibes has called a meeting of the world's most fiendish fiends.