Just a thought before I go. Booker's The Seven Basic Plots, which I am enjoying so much, and hope to finish over vacation has a repeated observation common to many of the basic plots: The hero or heroine obscured. From the comedies where one of the parties is disguised or mistaken for someone else to the heroic tales where the seemingly unimportant figure turns out to be the king or the long-lost princess in the end, the hero obscured must be enormously important to us psychologically.
Other variations include a character with amnesia, or in the grip of an obsession which makes them not themselves, or overshadowed by an unrelenting parent of other dark figure, or away on a long journey, or, or, or... simply everything, it seems, from Odysseus to about half the characters in LOTR or Star Wars.
Booker relates this to coming of age and coming to wholeness. Only when the disguise is off in the end can the character become whole and join her other half and inherit the kingdom. Rather than being about romance and wealth, the stories are about the personality and society coming into balance, drawing on our desire for romance and wealth as symbols of that wholeness.
Pick a story. Jane Austen. PG Wodehouse. David and Goliath. The hero or heroine is obscured in some way, and the resolution of that is the plot.