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.
“Now I don't want to feel cornered as an actor, because I've got a wider range than that.”
“I'm positive and I smile a lot, and I'm kind of a banana, but serious work just seems to find me, so I'm not going to argue with it.”