Lion of Oz

Lion of Oz is a 2000 animated film set before the childrens novel The Wonderful Wizard of Oz. It tells the story of how the Cowardly Lion, formerly part of the Omaha Circus, came to be in Oz, how he stopped the Wicked Witch of the East from getting the Flower of Oz. It is based upon the book Lion of Oz and the Badge of Courage by Roger S. Baum greatgrandson of L. Frank Baum, the original author of the Oz books.

Lion comes across a living Oak Tree being harassed by flying monkeys. Lion frightens them off and the Tree thanks him. Lion realises he can talk just as the Tree can talk. The Tree explains the monkeys serve the Wicked Witch of the East, who appears quickly.She threatens Lion to find the Flower of Oz for her or hell never see Oscar again, claiming that Oscar is her prisoner. Tree explains to Lion that The Witch is bent on conquering Oz, but is prevented from total control by the flower. ........

Source: Wikipedia