Alien: A cosmic case of UFOs, intergalactic intrigue and out-of-this-world romance launches Scooby, Shaggy and the Mystery, Inc. kids into their most unearthly adventure ever! Stranded in a remote desert town, the gang soon discovers the place is crawling with flying saucer buffs, secretive scientists... and less-than-friendly extraterrestrials! Zombie: Scooby-Doo, Shaggy, Velma, Daphne and Fred reunite to solve the most frightfully funny mystery of their careers. The scream team's headed to a haunted bayou island to investigate the ghost of Moonscar the Pirate. But it turns out the swashbuckler's spirit isn't the only creepy character on the island.