Story structure or narrative structure is the recognizable or comprehensible way in which a narrative's different elements are unified, including in a particularly chosen order and sometimes specifically referring to the ordering of the plot: the narrative series of events, though this can vary based on culture. In a play or work of theatre especially, this can be called dramatic structure, which is presented in audiovisual form. Story structure can vary by culture and by location. The following is an overview of various story structures and components that might be considered.

Story is a sequence of events, which can be true or fictitious, that appear in prose, verse or script, designed to amuse and/or inform an audience. Story structure is a way to organize the story's elements into a recognizable sequence. It has been shown to influence how the brain organizes information. Story structures can vary from culture to culture and throughout history. The same named story structure may also change over time as the culture also changes.

The three-act structure is a common structure in classical film and other narrative forms in or associated with the West.

First described in the fourth century A.D. by Aelius Donatus in his commentary on the works of Terence, the form was popularized by Syd Field in Screenplay: The Foundations of Screenwriting. Based on his recommendation that a play have a "beginning, middle, and end," the structure has been falsely attributed to Aristotle, who in fact argued for a two-act structure consisting of a "complication" and "dénouement" split by a peripeteia.

The sections are:

The first act begins with setup, where all of the main characters and their basic situations are introduced, as well as the setting. It contains the primary level of characterization for both of these (exploring the characters' backgrounds and personalities, the relationships between them, and the dynamics of the world they live in). This setup is often called the exposition.

Later in the first act, the protagonist experiences a dynamic event known as the inciting incident (or catalyst). Their initial actions are to deal with this event and attempt to reestablish order. These lead to the first plot point, where the first act ends and a dramatic question is raised; for example, "Will X disable the bomb?" or "Will Y end up with their love interest?"

The second act, or confrontation, is considered to be the bulk of the story. Here, the characters' conflict is most developed (particularly between the protagonist and antagonist) as well as any changes in values and personality one or more characters may undergo (known as character development, or a character arc). This leads to the second plot point, where the second act ends and the protagonist returns to their ordinary world.