Casper is turned into a mean devil ghost but Ghostly's trio plan backfires, terribly as they become victims of Casper’s violent mischief/Herman the Mouse takes his cousins to the museum where they encounter Katnip the cat who chases them all over the museum/In the frozen North, Captain Herman of the Northwest Mousies is trying to capture notorious outlaw Pierre Katnip, who has been robbing the little mice of all their food/Little Audrey would rather go fishing than going to school, and she and Pal dodge the truant officer