"The Plot" expertly details the nasty secrets of an affluent household: The phrase "I work hard so we can have nice things" has never sounded so menacing.
As for the stories, which are told in straight chronological order, they're amusing when taken one by one, but they don't come remotely near adding up to a plot, nor do they make you care about Ms. Mengers, who comes across as a thoroughly nasty piece of goods, the kind of "friend" who starts gossiping about you as soon as you leave the room.