When Gruffi accidentally destroys the Great Book of Gummi, he sets out to the supposedly abandoned Gummi capital city of Ursalia to attempt to replace it, only to find he's not the only one looking there.
Tummi takes pity an unsuccessful pharmacist and decides to improve his concoctions with a shot of Gummiberry juice. And when the first snow arrives, an old Gummi ritual proves more important than Sunni and Cubbi could have imagined.
When an old bridge that Grammi and Sunni use for errands collapses, Gusto convinces Gruffi to build a bigger, more elaborate bridge Then, a lovestruck Igthorn invites Lady Bane to Drekmore to discuss an alliance - and perhaps more.
Tummi's love of food gets him in trouble, and he learns a valuable lesson about willpower. And after a night with Cubbi, Gusto learns that rules are an important part of life.
Cavin has Zummi turn him into a Ogre to infiltrate Duke Igthorn's forces, but Cavin's mission has a series of complications that earn the villain's favor of him to the point that the Gummis fear Cavin's mind has been affected.
King Gregor hosts a ruler of a nearby kingdom and his daughter. Both Sunni and Calla learn that being a princess does not make one an instant sweet little girl. Then, Gusto creates a lifelike stone statue of Zummi.
Grammi finds what seems to be a Gummi forced to work as a side show and takes him home to Gummi Glen, but Gruffi thinks that there is something wrong with him.
The Glen Gummies are summoned to Ursalia and meet the Barbics, a nation of barbarian Gummi Bears who seek both a new home and a mighty weapon to exact revenge on humanity.
