A point can be made every narrative in some way borrows from what's come before. In my estimation, in one sense, there's only one plot. Protagonist encounters a complication, protagonist makes efforts to address the complication, protagonist reaches an accommodation with the final outcome of the complication.
The challenge since time immemorial is taking a novel outlook from unique perspectives on everyday complications (plot), settings, ideas, characters, and events. A general triumvirate of reader expectations and cultural coding conventions include not unduly jeapordizing willing suspension of disbelief, portraying proxy reality settings different from everyday routine primary settings, and involving readers in inclusive participation mystiques. Those are three principal meaning spaces of narratives.
Willing suspension of disbelief merely asks for credible complications (plot), settings, ideas, characters, and events. Impossible or improbable yet credible circumstances are the life's blood of fantastical genres. Readers' willing suspension of disbelief for the sake of participation mystique based on wish fulfillment and escapist entertainment favors fantastical genres.
Exotic proxy realities take readers away from their everyday humdrum existence into new and exciting existences. Even normal settings like everyday backyards become exotic from unique perspectives. Topically, a dreary workplace becomes a dystopian setting ripe for exotic proxy reality complications (plot) and settings and ideas and characters and events.
Participation mystiques draw readers into a narrative by their desires to vicariously participate in larger doings than their ordinary, everyday doings. Participation mystique is incited by building emotional resonance with a central character's main complication, high magnitude complications that are difficult to address, but making progress in the face of adversity nonetheless.
Emotional resonance can come from simple curiosity, the What happens next? fundamental suspense question, or more specifically, from sharing ideally opposing emotional clusters like pity and fear, awe and wonder, sorrow and hope, etc.
A basic listing of emotions from Wikipedia: Emotion; **
Affection
Anger
Annoyance
Angst
Apathy
Anxiety
Awe
Contempt
Curiosity
Depression
Desire
Despair
Disappointment
Disgust
Ecstasy
Empathy
Envy
Embarrassment
Euphoria
Fear
Frustration
Gratitude
Grief
Guilt
Happiness
Hatred
Hope
Horror
Hostility
Hysteria
Interest
Jealousy
Joy
Loathing
Love
Lust
Misery
Pity
Pride
Rage
Regret
Remorse
Sadness
Shame
Shyness
Sorrow
Suffering
Surprise
Wonder
Worry
**
http://en.wikipedia.org/wiki/Emotion