Whoever would have guessed that in the land of cheap sausages and mashed potatoes there could be such a change which would actually bring the French from Paris every weekend to invade Britain en masse to eat great food and drink great wine.
The marvelous thing about a joke with a double meaning is that it can only mean one thing.
Essentially and most simply put, plot is what the characters do to deal with the situation they are in. It is a logical sequence of events that grow from an initial incident that alters the status quo of the characters.