Wizard of Oz - Story

As there are many versions of the Wizard of Oz story, I have chose to make an adaptation of the the 1939 movie, as it is the most well known versions of the story and would be the simplest to adapt.
The main story focuses on Dorothy and her adventures with the Scarecrow, Tin Man and the Cowardly Lion, and how the Wicked Witch of the West wanted to kill Dorothy. Dorothy is trying to get back home after her house was caught up in a cyclone which transported her to Oz.
She is told by the Good Witch of the North to visit the Wizard of Oz so she can get home. However, the Wizard refuses to help her unless she kills the Wicked Witch of the West.