Question

when summarizing the of a plot one should notice the key ideas about how the conflict builds

Answer 1

No, it is generally not true that when summarizing the of a plot, that one should notice the key ideas about how the conflict builds, since plot summaries depend less on why conflicts occurred, and more on why they occurred.

Answer 2

When summarizing the "Middle"  of a plot, one should notice the key ideas about how the conflict builds.