Soon after discovering an old family heirloom called The Necklace of Argon, Tracey and her brother Wayne are magically transported to Blizzard Island where they set off on a quest to find the Great Argon and help save that world and ours from dying.
Tracey and Wayne's quest leads them to the Battlefield of the Gods, a barren boulder covered wasteland where magic does not work. With the help of a strange creature named Clea our heroes once again thwart Sydney the Witch's plans to steal the necklace of Argon and continue on their journey.
Their journey is made very difficult when our heroes are confronted by Sydney the Witch and Sir Python as they attempt to cross Fool's Bridge.
While looking for the Great Argon, Tracey, Wayne, and Rog enter the Thicket of Night. They are taken prisoner by the NightCrawler, a slimy creature on eight legs who makes them his slaves. Finally, with the help of a bumbling Sydney the Witch (who is after the huge deposit of Bhok crystals that resides in the Thicket) our heroes manage to escape.
Sir Python and Molcaster devise an elaborate plan to lure our heroes into their lair by setting out fake Argon footprints. Wayne is the only one that falls for the snake's plan and is captured. With Wayne as prisoner they wait for Tracey and Rog to come to his rescue. They are trapped as well the necklace of Argon is stolen.
Our heroes charm their way free with the help of exotic instruments sent to Tracey and Wayne by their father.
While exploring the caverns of Hollow Hollow our heroes meet two strange creatures named Bang and Clang: The Bellringers of Argon. The bellringers are joined together by a single beard and argue with each other constantly. After Tracey separates the two by cutting the beard the
Bellringers are indebted to Tracey, Wayne and Rog and that proves to be more than the trio can handle.
After curing Molcaster of an itching problem the Healing Stone gives Tracey clues about Argon which lead her to the Witch's lighthouse. There Tracey and Rog find more talking stones and are able to get more information from them and escape before Sidney and her super power potion capture them.
During an eclipse Tracey, Wayne, and Rog must get to the top of the highest mountain on Blizzard Island to find the Great Argon. Unfortunately, the eclipse affects everyone in strange ways: Rog becomes lovesick for a female Rogalonian and Sir Python and Molcaster switch personalities.
All of Blizzard Island is frozen with fear as the legend of the last leaf falling to the ground will start the winter that has no end. If that happens then everything on the island will freeze forever.
Eggbert realizes that Sidney truly misses him and that, more surprisingly, he misses her.
Tracey, Wayne, and Rog make it through the Vale of Fears and discover the Well of Dreams, the sleeping place of the Great Argon. However, hot on their trail are Sir Python and Molcaster, with Sidney the Witch following close behind.
Our heroes are finally able to wake the Great Argon and return the necklace to him. In doing so we learn the real meaning of the quest and we also learn that the true quest is yet to come.