In September 1892, Oscar Wilde and his family have retreated to the idyllic Norfolk countryside for a holiday. His wife, Constance, has every reason to be happy: two beautiful sons, her own work as an advocate for feminist causes, and a delightfully charming and affectionate husband and father to her children, who also happens to be the most sought-after author in England. But with the arrival of an unexpected houseguest, the aristocratic young poet Lord Alfred Douglas, Constance gradually --- and then all at once --- comes to see that her husband’s heart is elsewhere and that the growing intensity between the two men threatens the whole foundation of their lives.