The famous great dane and his intrepid companions Shaggy, Velma, Daphne and Fred continue to stumble upon creature-related comedy mysteries. Staying true to the classic elements that have made Scooby-Doo one of the best-loved characters for more than 30 years, these adventures turn up the suspense and humour. In this episode, the gang must stop a shape-shifting alien before Nasa's shuttle mission is aborted.