Scooby-Doo, Shaggy and the Mystery Inc. gang attend a science expo at the Houston Space Centre. While Fred flirts with a pretty scientist, he completes his latest electromagnetic contraption. Mecha Mutt is a gigantic robot dog that ends up wreaking havoc at the expo following a demonstration. Mecha Mutt has somehow come to life, apparently inhabited by the spirit of a spectre from outer space! Joined by their cute new friend Melanie Staples, who might just be hiding a really scary secret, the gang investigates the mystery of the Mecha Mutt menace and tries to stop the robot canine before he strikes again.
21mins
Cast: Frank Welker, Matthew Lillard, Grey Griffin, Mindy Cohn, Julie Bowen, Lacey Chabert
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