What is a story arc and why is it important?
A story arc is the episodes within a storyline; it is the narrative structure of a book or a story (or even a film, or a series of TV episodes). It is the rising and falling of tension, and the pacing and timbre of a plot. The tension should, in turn, force a shift in the behaviour of the characters and changes in their behaviour as they evolve and are changed by what happens to them.
Although an arc suggests a curve, most stories look more like a roller coaster. The image above is only one of many examples of a story arc, with a zig-zag of tension which falls at the point of obstacles in the story and ends with a denouement, a resolution. Films often use a three act structure: Setup — Confrontation — Resolution. Short stories also have a story arc, unless you are Lydia Davis! Her short story, Children, is just two sentences.
The introduction draws the reader into a setting, the characters and any potential conflict or goal. It is where the reader discovers what drives the protagonist and what will stand in their way.
A series of complications will often develop in the core of the text, leading to perhaps a crisis or a series of problems. Each of these crises may be temporarily resolved but the story will lead to a climax. There is a rising and falling of tension with each crisis, but an overall rising tension as we approach the Climax.
Denouement ties up the loose ends and resolves the conflict. Tension, at this point, rapidly dissipates leading towards the ending.
The three act structure was used by Aristotle, and in Greek tragedy.
The importance of a story arc lies in the need for structure, however varied. Without it the reader will meander through the book, get lost and but the book down. As a writer, you need to keep them turning the pages. Structure is an area of writing which I am working on, as I tend to err on the side of descriptive narrative. It depends on your genre, and crime thrillers might need more plot twists and higher tension than literary fiction, for example, but the story arc should be such that the reader’s emotions rise and fall throughout the narrative. Too much high tension, and the reader will run out of steam, and too little tension will lose the reader.
Some useful links to posts on story arc:
And finally, here is a humorous video of Kurt Vonnegut on Cinderella and the shapes of stories. It’s really exaggerated but comical https://youtu.be/oP3c1h8v2ZQ