Sent from Massachusetts by the formidable Mrs. Newsome to recall her son, Chad, from what she assumes to be a corrupt life in Paris, Strether finds his intentions subtly and profoundly transformed as he falls under the spell of the city and of his charge. He is quick to perceive that Chad has been not so much corrupted as refined, and over the course of the hot summer months in Paris he gradually realizes that this discovery and acceptance of Chad's unconventional new lifestyle alter his own ideals and ambitions.