Kenn Adams, author of The Art of Spontaneous Theatre.
Story Spine:
Beginning – establishes characters, place, time, and status quo - the world
Event – breaks the status quo (routine disrupted - world changed - crisis set in motion)
Middle – shows consequences of the event for characters and world - drives the main action
Climax – sets the resolution in motion - actions resolving the crisis
Resolution – shows how things have now changed
Once upon a time…
And every day… Beginning
Until one day…} Event
Because of that… (repeat as needed)} Middle
Until finally…} Climax
And ever since then…} Resolution