Once upon a time... a long, long time ago there was a land so far away that nobody has yet to find it. The name of this land was Doo and the people who lived there were called, 'Dooples'. While playing one day at the Inka Plinka River, the Dooples saw something moving on the other side. Then they found something very strange. They did not know what to do? They thought and they thought. Finally, they decided to go to Mt. Petrooky, the tallest mountain in the Land of Doo, to see Mr. Dooba Dee Doo for answers...and so this amazing musical animated adventure begins.