Watch out, villains, Scooby-Doo is on your trail! A globetrotting canine Sherlock Holmes with a heart of pure cowardice, Scooby-Doo- along with nephew Scrappy-Doo and uncle Yabba Doo - solves spooky mysteries with Freddy, Daphne, Shaggy and Velma. In the fourthseason, the gang protects the Maltese Mackerel, saves the Miss Earth contest, battles vampires and zombies, and rescues a friendlyalien!