Scooby-Doo and Scrappy-Doo (1979)

S1E3 Strange Encounters of a Scooby Kind

While camping at a construction site, Scooby, Scrappy, and Shaggy are suddenly abducted by an alien spacecraft. With their friends in danger, Fred, Daphne, and Velma spring into action, determined to rescue them from their extraterrestrial captors.