Scooby Doo and the Mystery Inc. gang pick up hitchiking Gary Coleman, and the Mystery Machine soon proceeds to break down (multiple times) finally leaving them stranded at a haunted castle owned by David Cross. This Halloween special is an all-out spoof of the 1972 series The New Scooby Doo Movies, complete with multiple references and gags that take jabs at the original show, musical numbers by Big Bad Voodoo Daddy and Matthew Sweet, and concluding with a nonsensical ending.