The document discusses several theories of narrative structure, including:
1) Circular, episodic, and linear structures. Circular narratives begin with the end while episodic narratives are broken into chapters.
2) Tzvetan Todorov's theory that all narratives follow the basic structure of equilibrium, disequilibrium, and a return to equilibrium.
3) Vladimir Propp's theory that all narratives contain 7 character types like the hero, villain, and princess.
4) Claude Levi-Strauss's idea that narratives are based on conflicts between binary oppositions like good vs evil.
The author concludes that they will use a circular narrative structure for their gangster film opening to engage audiences and set