The passage discusses narrative structures in films. It describes the traditional three-act structure, with Act 1 introducing characters and conflicts, Act 2 featuring increasing obstacles for protagonists, and Act 3 resolving the conflicts. It also outlines film scholar Kristin Thompson's four-part structure model, with a turning point at the midway point dividing the film into two roughly equal halves of setup and payoff. Finally, it defines the exposition as the dense opening that orients viewers with narrative details, setting the stage for the primary conflict in the first act.