It's a rainy afternoon, and Mona's tearing through the attic so noisily that her mother worries she'll wake the dead. And indeed she does that night, great great uncle Morbus rises from a dusty painting bent on completing an age-old mission. What is the devious Uncle Morbus up to? Only a showdown at the Historical Society Museum will tell. / Ah, the fun of the fair - bumper cars, Ferris Wheels and games at kiosks with barking vendors! Mona and her pals are having the time of their lives until...dimensional warps start to occur. An outrageous fairground rides crack the scary dimension barrier. Fang is lost in another dimension! But how to find him? The answer lies within the FUNHOUSE at the heart of the fair. It's a maze, it's a trap, it's fourth demension mayhem! You're big one minute, small the next, tall the next and always lost. Some crazy un-universal force is controlling this un-random chaos and Mona and pals have got to find out what. If they can't get the secret out of old Funhouse, you can bet they'll be trapped in the Funhouse FOREVER.