Viola is shipwrecked on the coast of Illyria and she comes ashore with the help of a captain. She loses contact with her twin brother, Sebastian, whom she believes to be drowned. Disguising herself as a young man under the name Cesario, she enters the service of Duke Orsino through the help of the sea captain who rescues her. Duke Orsino has convinced himself that he is in love with Olivia, whose father and brother have recently died, and who refuses to see charming things, be in the company of men, and entertain love or marriage proposals from anyone, the Duke included, until seven years have passed. Duke Orsino then uses 'Cesario' as an intermediary to profess his passionate love before Olivia. Olivia, however, forgetting about the seven years in his case, falls in love with 'Cesario', as she does not realize the Duke's messenger is a woman in disguise. In the meantime, Viola has fallen in love with the Duke Orsino, creating a love triangle between Duke Orsino, Olivia and Viola: Viola loves Duke Orsino, Duke Orsino loves Olivia, and Olivia loves Viola disguised as Cesario.