Nightmare pretends to be various animals but everyone is afraid of her rather than impressed.; The Puzzle King forces Casper to solve several puzzles to get Pearl's dog back.; Casper solves all the Puzzle King's puzzles.; Witch Worma doesn't think that her brew is nasty enough, so she insists on cooking up another batch before selling it to Wendy, and leaves Wendy in charge of her brew stand in the meantime.; Gnewton tries to prove that he is better than Nightmare because he has hands but she can do just about anything that he can do.; Spooky is informed that he has won a trip to the Sub-City Worlds' Fair, but it is just a trick to lure him and Pearl to Sub-City.; The leader of Sub-City wants to marry Pearl and become king of both the upper and lower worlds.; Boobert doesn't believe Nightmare's stories about her exploits.; The ghosts play tricks on each other.; A centaur and a two-headed giant are both afraid of Casper and Nightmare.; Spooky finds a new use for a lawn sprinkler.; Spooky boos his way through a mountain to find his way home.; Casper agrees to look after Pearl's dog, who runs away and leads Casper to a strange place where everything is a puzzle.; Spooky tries to hide his booing from Pearl.; Spooky can't keep from booing, even when he's carving on a tree.; Spooky boos a bushel of apples out of a tree.