Prospero is unceremoniously ditched as Duke of Milan by a conspiracy involving his brother Antonio. The conspirators believe that Prospero is spending too much time studying the liberal arts—not to mention magic—instead of doing what he's supposed to be doing, which is governing his dukedom.
Prior to his exile, Prospero allows Antonio to manage the dukedom's day-to-day affairs. But Antonio's none too pleased at what he sees as a raw deal. He thinks it incredibly unfair that he should have all the responsibilities that come with being Duke of Milan but without the actual power and authority that the title entails. So he readily agrees to go along with a plot to usurp Prospero and send him into exile.
Prospero will still have his own little dukedom, complete with his own subjects—Ariel and Caliban—but it will be far away from Milan, on a...
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