On September 13, 1969 a talking Great Dane named Scooby-Doo made his TV debut into the living rooms of millions of Americans, alongside his four teenage friends who together all make up Mystery, Inc. Riding around in their sometimes-smoked-filled Mystery Machine van, Scooby, Daphne, Fred, Velma, and Shaggy team up to solve supernatural mysteries through a series of hi-jinks and missteps. Jinkies!