By George, It's a Dragon!.Danger Mouse and Penfold travel to Wales where they must deal with a fire-breathing dragon. It turns out to be a dragon named Jones who is about the same size as them. As per the customs, Jones abducts the damsel in distress (Penfold) and hides in a nice big castle that was offered by Baron Greenback while Danger Mouse strives to be the rescuer knight. When Jones discovers that Greenback was going to take over and enslave Jones, he goes after Greenback instead.