In the kingdom of Illyria, a nobleman named Orsino lies around listening to music, pining away for the love of Lady Olivia. He cannot have her because she is in mourning for her dead brother and refuses to entertain any proposals of marriage. Meanwhile, off the coast, a storm has caused a terrible shipwreck. A young, aristocratic-born woman named Viola is swept onto the Illyrian shore. Finding herself alone in a strange land, she assumes that her twin brother, Sebastian, has been drowned in the wreck, and tries to figure out what sort of work she can do. A friendly sea captain tells her about Orsino's courtship of Olivia, and Viola says that she wishes she could go to work in Olivia's home. But since Lady Olivia refuses to talk with any strangers, Viola decides that she cannot look for work with her. Instead, she decides to disguise herself as a man, taking on the name of Cesario, and goes to work in the household of Duke Orsino.