mattrom: I haven’t done the puzzle since I don’t have a printer here on the island (note to self: get one), but looking at the clue…
The arc of a story, also known as a narrative arc or dramatic arc, is the structure of a story's plot and how it progresses. It's the chronological order of events, from the beginning to the end, and can be represented as a diagram in the shape of a mountain peak.
Would that be it?