The Tempest is set on a remote island inhabited by Prospero, the banished Duke of Milan, and his daughter, Miranda. Prospero, now a magician, uses his magic to control the spirits of the island. With the help of the spirit Ariel, he conjures a tempest in the sea to draw in his brother, Antonio, and Alonso, King of Naples, who had unlawfully stolen his dukedom. The play revolves around Prospero's attempt to restore himself and his daughter to their rightful position.