This is a theme because it is a concept NOT the story line. A plot summary is basically the story line as if you were writing a summary of the book or story.
I confused about this question. What?!
The author's main purpose of writing memoir Night was to describe the terrible conditions of war.
Explanation: The author has described about the inhumanity to nature when the war has took place. The crying night souls of the people are expressed in the poem where they starve for happiness and peace.