Scooby-Doo and the Alien Invaders

While driving through the desert, Shaggy Rogers accidentally drives onto government property before a UFO sighting causes him to crash near a small town. He and his dog Scooby-Doo stay with the group's van, the Mystery Machine, while the others head towards town to find help. They soon encounter aliens who chase them into town. After reuniting with their friends in a diner, they meet Crystal, an undercover government agent sent to investigate alien activity, and her dog Amber. The gang follows Shaggy and Scooby as they are abducted by the aliens before being rescued by Crystal and Amber. The group eventually uncovers that the aliens were actually the SALF (Search for Alien Lifeforms) team, who had been hiding a 19th-century gold mine on government property.