Malvolio is released from his prison when it is revealed that the letter was a forgery he swears his revenge. Orsino comes to realize that he’s in love with Viola, and the couples are happy. Sebastian arrives, and Viola reveals her true identity. Olivia comes in and greets Viola, thinking that she is the man that she just married. Feste, the Fool, disguises himself as a priest and messes with Malvolio, making Malvolio begin to wonder if he is crazy after all.Īntonio is brought in to see Orsino, and his rantings about Sebastian’s betrayal are bewildering to Cesario because “he” does not know him. She asks him to marry her, and he happily agrees. Andrew attacks Sebastian, and Olivia arrives, separating the men and bringing the very bewildered Sebastian back to her home because she believes him to be her Cesario, too. Meanwhile, Sirs Toby and Andrew come across Sebastian nearby, and mistake him for Cesario. Maria, Sir Toby, and Fabian take the opportunity to lock Malvolio up. Malvolio’s behavior alarms Olivia, and she believes he has gone crazy. However, because “Cesario” doesn’t recognize him, he believes “Sebastian” has betrayed him. He steps between the men and is carried away by guards because he is an enemy of Duke Orsino. Antonio enters as the two are about to duel and thinks that “Cesario” is Sebastian, whom he has come to care for very much. Sir Toby convinces Sir Andrew to challenge Cesario to a duel in order to win Olivia’s heart. They deliver a letter in her handwriting telling him to act and dress strangely to prove his love for her. Meanwhile, members of Olivia’s court conspire to make her obnoxious steward Malvolio think that she has fallen in love with him. Like Viola, Sebastian believes his sister drowned. Sebastian is actually very much alive, and staying with a man named Antonio on another side of the island.

The Duke sends Cesario as an envoy to Olivia on his behalf, but Olivia ends up falling in love with “Cesario” and gifting “him” with a ring. She ends up falling in love with Duke while still in disguise as a man. Viola disguises herself as a man and calls herself Cesario, and begins to serve in Duke Orsino’s court. Meanwhile, Viola, a beautiful aristocrat, is shipwrecked on the island of Illyria, and she believes her twin brother Sebastian has likely drowned. Olivia refuses to marry anyone for seven years, but Duke Orsino is determined to win her over. Duke Orsino is in love with Countess Olivia, who is in mourning for her recently-deceased brother.

Twelve nights william shakespeare