It is Scooby's birthday and Shaggy, Daphne, and Scrappy Doo pretend to forget when they planned a surprise " Its Your Life " bash for Scooby Doo w/ surprise guests Fred Jones and Velma Dinkley but a creep from a past case crashes for revenge on the gang.
Scooby and the gang visit a hotel where everything seems to hint at Shakespeare. A ghost appears with a message and a warning. While the gang is visiting the Greek Islands, Supercrook "Fattiest Blimp" has figured out a way to turn people to stone. Many influential peole are on his hitlist... including Scooby Doo.
Velma invites Daphne, Shaggy, Scooby, and Scrappy Doo to have lunch w/ her at the white house. Velma an analyst for nasa is present for a special announcement the president is giving, unfortunately the ghosts of past presidents appear along with the theft of a presidential heirloom.
Showboat Scooby: The gang heads to the Delta Queen to see Dixie Doo, but the customers are scared away by the ghost of Col. Beauregard, who is looking for Magnolia. The 'Dooby Dooby Doo' Ado: The gang heads to Las Vegas's, Circus A Go-Go, to see cousin Dooby Dooby Doo in concert. It then seems that someone is out to steal kidnap Dooby and steal his fancy collar.
When Mystery Solvers Magazine holds it first contest in London, the gang attends along with other detectives to sold the Mystery of the Blue Carbuncle. When the ghost of Sherlock Holmes shows up, it appears he's helping the gang, but he ends up stealing security system blueprints, the gang is blamed and they must clear their names before it's too late.
A Scarey Duel w/a Cartoon Ghoul: The gang wins a trip to a tv studio b/c of Scrappy's favorite show. When they get their the villain has come to life and has started terrorizing the studio. E.I.E.I.O: The gang heads to old MacDonalds experimental farm discovering a giant genetically created mouse doesn't want them snooping around.