The play opens with a group of English aristocrats gathering at the country house of Lady Hunstanton. Among the guests are Lord Illingworth, a charming but morally questionable man, and Mrs. Arbuthnot, a woman with a secret past. Also present are young Gerald Arbuthnot, Mrs. Arbuthnot's son, and Hester Worsley, a young American woman.
The central conflict of the play revolves around Mrs. Arbuthnot's desire to protect her son from the influence of Lord Illingworth, who offers Gerald a position as his secretary. Mrs. Arbuthnot's concern stems from her own painful past, as Lord Illingworth is the father of her illegitimate child, Gerald.
Throughout the play, Wilde explores themes of social hypocrisy, the consequences of past mistakes, and the importance of moral integrity. The characters engage in witty and satirical conversations, often concealing their true thoughts and feelings beneath a veneer of politeness.
As the play unfolds, secrets are revealed, and characters are forced to confront their own moral choices. Mrs. Arbuthnot's steadfast determination to protect her son's future becomes a central focus, leading to a dramatic confrontation with Lord Illingworth.