As the freedom of the Jazz Age transforms New York City, the iridescent Mrs. Theresa Marshall has done the unthinkable: she’s fallen in love with her young paramour, Captain Octavian Rofrano, a handsome aviator and hero of the Great War. While times are changing and she does adore the Boy, divorce for a woman of Theresa’s wealth and social standing is out of the question, and there is no need; she has an understanding with Sylvo, her generous and well-respected philanderer husband. But their relationship subtly shifts when her bachelor brother, Ox, decides to tie the knot with the sweet younger daughter of a newly wealthy inventor.