Prospera, the former Duchess of Milan, has spent many embittered years stranded on an island after being usurped by her ruthless brother, Antonio. Her only comforts are her daughter, Miranda, and her own magical powers, which Prospera uses to conjure a storm that brings several shipwreck survivors ashore, Antonio included. But when her intricate revenge plot puts Miranda’s future at risk, Prospera is caught between her desire to reclaim her rightful rule and her unwavering love for her daughter.