Lambert Strether, a middle-aged, yet not broadly experienced, man from Woollett, Massachusetts, agrees to assume a mission for his wealthy fiancée: go to Paris and rescue her son, Chad Newsome, from the clutches of a presumably wicked woman. On his journey, Strether stops in England and there meets Maria Gostrey, an American who has lived in Paris for years. Her cynical wit and worldly opinions start to rattle Strether's preconceived view of the situation.