Grady's family has just moved out of the city. Into the swamp. Suffice to say, Grady and his sister, Emily, aren't exactly thrilled, especially when his sister finds a snake in the medicine chest. After making a few jokes about the snake looking like Emily's old boyfriend, his father orders him to set the snake free in the swamp. So Grady does. However, he gets a bit lost, and realizes he's gone in a bit too deep. He then runs into the local swamp hermit. The next day, Grady meets the only other kid around, Will Blake. When the go into the swamp, Will tells Grady about a strange fever that you can get from the swamp. He also tells Grady about the swamp hermit, and how the swamp hermit is a werewolf. Grady somehow believes it, but his family is skeptical. That night, hoping he does not catch the ""Fever Swamp"", Grady goes downstairs to lock the basement door, but he is attacked by an animal. Is it the werewolf?

Jeff's Parents Do Not Believe that the Mummy in their basement is Alive.

Sam visits a haunted house he is researching and is followed home by a ghost who becomes his invisible friend.

Cooper Holmes hears mysterious dogs barking in the night, then sees two evil-looking canines that disappear.

The Morris family gets lost during a road trip and happens upon Horrorland, only to find that it's more sinister than it seems.

While being held in Horrorland by the monsters that inhabit it, the Morris family tries desperately to escape and go home.

While exploring a deserted mansion, Nadine and Jonathan find themselves trapped in a board game and must fight to escape.

Jessica, a master negotiator who lives to make money, is sucked into the miniature town of Karlsville and is offered a golden opportunity that comes with a warning - there are no guarantees for `greedy little pigs'.

After suffering the losing strike out of his baseball game, a boy is taken into the model town of Karlsville and is trapped in a seemingly never-ending and dangerous game of Karlsville baseball.

Matthew and Jessica must rescue Todd from Karlsville before he becomes a permanent resident of the model town... and turned into a plastic figurine forever.