What term describes something that happens in a story?

The term that best describes something that happens in a story is "event." In the context of storytelling, an event refers to a specific occurrence or happening that affects the plot and can influence character development or the story's outcome. Events are the building blocks of the narrative, helping to advance the storyline and engage readers. They can range from significant plot points to smaller interactions between characters, but ultimately, an event signifies a moment that contributes to the overall progression of the story. This clarity in terminology helps readers identify and analyze the sequence of happenings that shape the narrative arc.