John Worthing, a carefree young gentleman, is the inventor of a fictitious brother, “Ernest,” whose wicked ways afford John an excuse to leave his country home from time to time and journey to London, where he stays with his close friend and confidant, Algernon Moncrieff. John, under the name Ernest, has won the love of Algernon’s cousin Gwendolen, for she strongly desires to marry someone with the confidence-inspiring name of Ernest. But when he asks for Gwendolen’s hand from the formidable Lady Bracknell, John must reveal he is an orphan, left in a handbag at Victoria Station.
Lady Bracknell insists that he produce at least one parent before she consents to the marriage. Returning to the country home, where he lives with his ward Cecily Cardew and her governess Miss Prism, John finds that Algernon has also arrived under the identity of the nonexistent brother Ernest.