High winds draw Oscar Diggs' hot air balloon into Oz, where he encounters the Wicked Witch of the West in Winkie Country. When she threatens to use her magic on him, he scares her off with his ventriloquism. He soon becomes the new lord of the Winkies, while the Wicked Witch retreats to find a way to defeat her new nemesis. On advice from her sister, the Wicked Witch of the East, she steals the Golden Cap from the sorceress Gaylette and commands the Winged Monkeys to chase Oscar away.