The gang is driving down an old country road and are running out of gas and have to stop soon. They park at an old farmhouse and talk to an old farmer who at first mistakes the gang for reporters. The gang explain their situation and the man says that the reporters have been bothering him because a spooky spacecraft and an alien has been haunting an abandoned airfield adjacent to the farm. After getting gas, Fred Jones, Daphne Blake, Velma Dinkley, Shaggy Rogers and Scooby-Doo realize they have a mystery on their hands and they follow a strange flying aircraft and follow it to the abandoned airfield. They find a running generator and Scooby and Shaggy have a run-in with a creepy alien-type creature in a space suit that has an unforgettable hysterical laugh. Fred and the girls search for cl