Prospera, the duchess of Milan, is secretly denounced as a sorceress and usurped by her brother Antonio, with aid from Alonso, the King of Naples, and is cast off in a small boat to die with her three-year-old daughter Miranda. They survive, finding themselves stranded on an island where the human beast Caliban is the sole inhabitant. Prospera enslaves Caliban, frees the captive spirit Arial and claims the island. After 12 years, Alonso sails back to his kingdom from the marriage of his daughter to the prince of Tunisia, accompanied by his son Ferdinand, his brother Sebastian and Antonio. Prospera, seizing her chance for revenge, with Ariel's help causes a tempest, wrecking the ship and stranding those on board on her island. Cast Helen Mirren as Prospera – a sorceress and Miranda's mother Ben Whishaw as Ariel – a spirit who aids Prospera Djimon Hounsou as Caliban – Prospera's slave who, along with Stefano and Trinculo, plots against her Felicity Jones as Miranda – Prospera's daughter who falls in love with Ferdinand David Strathairn as Alonso, King of Naples – Ferdinand's father and Trinculo and Stefano's employer Tom Conti as Gonzalo – a counsellor to Alonso, who gave aid to Prospera and Miranda Reeve Carney as Ferdinand – Alonso's son, who falls in love with Miranda Chris Cooper as Antonio – Prospera's brother and Miranda's uncle Alan Cumming as Sebastian – Alonso's brother Alfred Molina as Stephano – Alonso's butler who, along with Trinculo, joins forces with Caliban to plot against Prospera Russell Brand as Trinculo – Alonso's jester who, along with Stephano, joins forces with Caliban to plot against Prospera