Prologue

Prologue

noun | Screenwriting & Development

An introductory sequence that precedes the main narrative, establishing context, backstory, world-building information, or a prior event whose consequences will shape the story that follows. The prologue is distinct from the first act: it operates outside the main story's timeline or narrative scope, providing the audience with information or experience that positions them correctly to receive the story that is about to begin.

Quick Reference

The Explanation: How & Why

A prologue does work that the main story either cannot do or would be slowed by doing within its own timeline. It is a spatial and temporal exception -- a section that stands outside the story proper and therefore operates by different rules.

Prologues serve several distinct functions:

Historical or mythological context: Many films -- particularly fantasy, science fiction, and historical epics -- open with a prologue that establishes the world's history, the conditions of the present story, or the events that made the current conflict inevitable. The prologue to The Lord of the Rings: The Fellowship of the Ring (2001) delivers decades of Middle-earth history in eight minutes through Galadriel's narrated voice-over over dramatic imagery. Without this prologue, the film's present-day conflict is incomprehensible. The main story begins only after this foundation is laid.

Prior event dramatisation: A prologue may dramatise a specific past event whose consequences drive the main story. Rather than delivering this backstory through exposition within the main narrative, the film shows it directly before the main story begins. The audience enters the main story already carrying the weight of the prior event.

Tone-setting: Some prologues establish the emotional and aesthetic register of the film before the story begins -- a thematic statement, a mood piece, an image sequence that prepares the audience for the specific kind of experience the film will provide.

Frame narrative: A film that uses a framing device -- an older character recounting events from their past -- may use a prologue to establish the framing present before moving to the main flashback story. Stand by Me (1986) opens with an adult narrator in the present, establishing the frame through which the childhood story is presented.

The risk of the prologue is front-loading. Prologues delay the main story's beginning. If the prologue is too long, too expository, or insufficiently compelling in its own right, the audience arrives at the main story already tired of waiting. The prologue must earn its place by being genuinely necessary -- by delivering something the main story needs but cannot accommodate within its own timeline.

Historical Context & Origin

The prologue has a history as old as formal drama. Greek theatre used a prologos -- literally "before the word" -- to establish the play's situation, often spoken by a single character addressing the audience directly. Elizabethan theatre used a Chorus figure to deliver similar introductory context. In cinema, the prologue appears in many forms: the title card text crawl (most famously in Star Wars, 1977), the narrated voice-over over establishing imagery, the dramatised prior event, and the frame narrative establishing scene. Silent cinema frequently used extensive title card prologues to establish historical and geographical context before the story began. Contemporary cinema tends toward shorter, more action-oriented prologues that establish immediate tension rather than expository context.

How It's Used in Practice

Scenario 1 -- World-Building Prologue (Director / DP): A science fiction film opens with a 4-minute prologue: a voice-over narrator explains the environmental catastrophe that has made Earth uninhabitable, over images of the devastated planet, the refugee ships, and the colony worlds. No characters from the main story appear. By the time the prologue ends and the main story begins, the audience understands the world, its history, and the stakes of the story they are about to watch.

Scenario 2 -- Prior Event Prologue (Screenwriter / Director): A thriller's main story begins fifteen years after a kidnapping that defined its protagonist's life. Rather than delivering this backstory through flashback or exposition within the main narrative, the film opens with a five-minute prologue dramatising the kidnapping in full: the night, the child, the failure to prevent it. The prologue ends; fifteen years pass in a title card; the main story begins with an adult protagonist carrying everything the audience has just witnessed.

Scenario 3 -- Tone-Setting Prologue (Director / DP): An arthouse drama opens with three minutes of wordless imagery: hands in water, a specific stretch of road at dawn, an empty chair at a kitchen table, a field in wind. No narrative information is conveyed. The sequence exists entirely to establish the film's tempo, its visual register, and the quality of attention it will require from its audience. The prologue is a contract with the viewer: this is the kind of film you are about to watch.

Usage Examples in Sentences

"The prologue delivers the world's history before the story begins -- without it, the main plot is incomprehensible."

"Four minutes is too long for the prologue if nothing is happening. Dramatise the prior event; don't just describe it."

"The Star Wars text crawl is a prologue in the most efficient form possible: three paragraphs, total context, story begins."

"Every prologue must earn the delay it creates. If the main story could begin without it, the prologue should not exist."

Common Confusions & Misuse

Prologue vs. First Scene: Not every opening scene is a prologue. A prologue is structurally outside the main narrative -- it operates before the story's timeline begins, provides context from outside the main story's scope, or establishes a frame. A first scene that begins the story directly, introducing the protagonist in their present situation, is not a prologue even if it also establishes context. The prologue is a section that precedes the story; the first scene begins it.

Prologue vs. In Medias Res Opening: An in medias res opening begins the story in the middle of its action, before jumping back to the chronological beginning. This is a flash-forward followed by chronological rewind -- it is part of the main narrative's structural arrangement. A prologue is prior to and outside the main narrative, not a rearrangement of it.

Related Terms

• Epilogue -- The structural counterpart at the story's end; a supplementary section after the main narrative concludes
• Exposition -- Prologues often deliver exposition that the main narrative cannot accommodate
• Backstory -- A common subject of prologues; events that occurred before the main story begins
• Flashback -- An alternative to the prologue for delivering prior event material within the main narrative
• Foreshadowing -- Prologues can foreshadow the main story's events through imagery, theme, or prior event

See Also / Tools

The Shot List Generator helps plan the specific shots of a prologue sequence -- noting the visual language, tone, and information delivery goals that distinguish prologue imagery from the main narrative's visual style.