The Gummis are nearly out of Gummiberry juice so Grammi needs to make more, but the spigot is stuck so Zummi, Grammi, Cubbi, and Cavin go to the pumping station to fix the problem. But they discover that the pumping station is near a maritime boundary that separates Dunwyn and Drekmore – where Duke Igthorn and his ogres live. They only have four bottles of Gummiberry juice left, that's one for each of them. Can they fix the problem and get back home safely to Gummi Glen without being noticed by the ogres?
- June Foray as Grammi Gummi (voice)
- Christian Jacobs as Cavin (voice)
- Katie Leigh as Sunni Gummi (voice)
- Lorenzo Music as Tummi Gummi (voice)
- Noelle North as Cubbi Gummi (voice)
- Bill Scott as Gruffi Gummi (voice)
- Paul Winchell as Zummi Gummi (voice)