Episode Title:
A World Below Us.
Episode Description:
After Gi is rescued from Sly Sludge's mechanical octopus, she is taken to a secret underwater city known as Oceanus, which is being threatened by Sludge's illegal toxic dumping. When the dome around Oceanus begins to burst, flooding the city, Captain Planet and the Planeteers must race against time to save the people of this underwater paradise.
