"Twelfth Night" by William Shakespeare

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 …

…the scene, and all is revealed. The siblings are joyfully reunited, and Orsino realizes that he loves Viola, now that he knows she is a woman, and asks her to marry him. We discover that Sir Toby and Maria have also been married privately. Finally, someone remembers Malvolio and lets him out of the dark room. The trick is revealed in full, and the embittered Malvolio storms off, leaving the happy couples to their celebration.