The CHARACTER ARC
PLOT ARC: The events that happen while the characters make other plans.
CHARACTER ARC: The emotional roller-coaster that the character suffers while dealing with the Plot.
To make a story a cohesive whole, every single thing in it must be there for a reason. Every single character, object, location, and event must push toward the ending you have planned even if it doesn't look that way to the casual observer. In short, every scene in the story should either illustrate a characteristic attribute of a main Character or be an Event that makes your ending happen.
What the Character Arc does is map out the Emotional path your characters need to take to grow and change into the heroes and heroines your story needs to achieve your story's ending.
For the record, a Character Arc can be used all by itself as th