Stranded at O'Hare Airport due to bad weather, and looking for their lost luggage, the gang gets involved in a case that includes an apparent ogre, a missing snow leopard, and a pilotless jetliner that Shaggy and Scooby have to land by themselves.
Returning home to Coolsville, the gang exposes a scam by "Madame Regresso," who seems to be able to uncover their past lives, but it's really the owner of the local costume shop who is getting a lot of new business from people who want to buy the clothes they supposedly used to wear.