Tummi takes pity on Doctor Dexter, an unsuccessfull pharmacist, and decides to improve his concocctions with a shot of Gummiberry juice. Unfortunately, this new wonder medicine also attracts the attention of Igthorn, and without the knowledge of how to exactly replicate the formula, the Doctor is caught between a rock and a hard place.

Sunni learns the importance of keeping Gummi traditions when a giant reawakens thanks to her carelessness.

Gruffi burns the Great Book of Gummis and goes to Ursalia to find another to replace it. Their he meets Thornberry, a gummi who tries to save Ursalia from an evil witch, Lady Bane!!

Gusto inspires delusions of grandeur into Gruffi's bridge project.

Duke Igthorn meets Lady Bane for the first time and falls in love.

Tummi fights a battle with his own self control when Duke Igthorn temps him with food.

When rules don't seem to have any effect, Cubbi learns an important lesson of life from Gusto by living with him for one day.

Duke Igthorn has come up with a plan so secret that Cavin is turned into an ogre in order to spy on him.

When a snobby princess visits Dunwyn, she causes a war.

Gruffi won't admit that Zummi is his best friend until Gruffi mistakes Gusto's lifelike sculpture of Zummi for the real thing.

Trolls are on the loose again, and this time they've hijacked an ancient Gummi digging machine.

The Gummis go to Ursalia and meet The Barbic Gummis. The Barbics are there to look for a weapon to destroy humans.

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 there is something wrong with him. Are Gruffi's suspicions correct, or have they found another Gummi Bear?