A story arc is the chronological construction of plot in a narrative, outlining the progression of events and character development. It typically includes key elements such as the introduction, rising action, climax, falling action, and resolution. This structure helps to create a cohesive and engaging story that captures the audience's interest. Story arcs can vary in complexity, from simple arcs in children's literature to intricate ones in novels and films. They often reflect the characters' journeys, showcasing their challenges and growth. Understanding story arcs is essential for writers and readers alike, as it enhances the appreciation of storytelling.