This document summarizes Tzvetan Todorov's narrative theory, which proposes that stories follow a five-part structure: equilibrium, disruption, recognition of disruption, attempts to repair disruption, and return to equilibrium. It then applies this theory to analyze the structure of a Friends episode. Finally, it outlines Vladimir Propp's character archetypes and maps them to characters in the Harry Potter series, identifying Harry as the hero, Voldemort as the villain, etc.