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!!

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S05E02 · Let Sleeping Giants Lie

S05E04 · Bridge On The River Gummi

All episodes of Disney's Adventures of the Gummi Bears