Narrative theory is how a film or story relates to each other, in the film Romeo and Juliette the theme was that there were rivalling families who are meant to hate each other but the two children fall in love. In Frozen the new Disney film, there is the point that Ana thinks that Hans is a hero, but it turns out he is a villain in the end. You have Olaf who is the magical snowman who risks his life to make sure that Ana doesn't freeze and die. The trolls are linked to the princess from when she needed there help from when she was younger.
Binary opposites are usually used in films to help the plots, they are also used in music videos as part of a narrative to reinforce song lyrics.
The above picture shows some class work that we did on Binary Oppositions. The idea is that you can base a narrative around things that are opposites. The examples i found above are that in Romeo and Juliet Love and Hate are two large opposites that create the narrative and in World War Z two of the major themes are death and life.
Propp - Seven Spheres of Action
Propp came up with the idea that in plays and literature that you would have 7 different character types. A clear example of this is from the film Frozen where they have used 7 different main characters:
Hans (False Hero & Villain), Rock Trolls (dispatcher), Olaf (Helper), Kristoff (Hero), Elsa (Princess), Ana (Princess), Sven (Donor for providing aid to the hero).
Tzvetan Todorov - 5 stages of action
At the beginning of Parent Trap the stat of equilibrium is that the twins are living separately with individual parents. The disruption to that is when they meet at camp. The state of disruption is when the twins try to get their parents back together. The resolution is when they come up with the holiday so they can get the parents back together. The new equilibrium is them all living together as one big family.