Shipwrecked on the coast of Illyria, and believing her twin brother drowned, Viola adopts male disguise and enters the service of Duke Orsino, only to find herself entangled in a triangle of unrequited love. Meanwhile, in the household of the Countess Olivia, Sir Toby Belch - portrayed by the great Brian Dennehy - and his unruly companions trick Olivia's censorious steward, Malvolio, into believing that she loves him.