Narrative theory examines the elements that make up stories in media like films. Theories explore concepts like binary oppositions between characters, the four or five act story structure, and how directors symbolically represent ideas. For example, in Groundhog Day, Harold Ramis traps the audience in the same day loop as the main character to convey a message. The documentary also discusses theorists like Levi-Strauss who believed meanings come from opposites, and Joseph Campbell's monomyth theory of the hero's journey common to all stories.