Structure II: short films and series

Feature-film structure is only one shape a screen story can take. Short films and television series each have their own demands. A short must tell a complete story in minutes, with no room for subplots or slow setup. A series must hook an audience in a pilot, sustain story over many episodes and seasons, and fit the rhythms of broadcast schedules or streaming releases. This lesson looks at how structure changes in short films, half-hour and one-hour episodes and limited series, and at how writers' rooms break stories together.

The short film

A short film is not a compressed feature. Trying to cram a feature's worth of plot into ten minutes produces a rushed, confusing film. Successful shorts usually focus on one character, one situation and one turn or revelation. Many festivals define a short as about 40 minutes or less, but most festival shorts are much shorter, often 5 to 15 minutes, because programmers can fit more of them into a program and audiences respond to economy.

• Start late: open as close to the turning point as possible. Skip the morning routine and arrive at the moment the situation changes.
• Keep it small: two or three main characters and one to three locations.
• One turn or revelation: many shorts build to a single twist, reversal or emotional shift.
• End early: leave the audience with an image or question rather than tying every thread.
• Make every second count: in a 7-minute film, a 30-second establishing sequence is more than 7 % of the running time.

Shapes that work in shorts

Several structural shapes appear again and again in successful shorts.

The revelation and reversal shapes depend on careful setup. Plant clues that seem ordinary on first viewing but make sense afterward. If the twist is unearned or obvious, it feels like a trick.

Television series: the basics

Series writing differs from feature writing in several ways. A feature resolves its story; a series must keep going. Writers build a story engine, a situation that can generate many episodes: a workplace, a family, a recurring case, a mission. Characters change more slowly, because audiences return to watch familiar people. Episodes balance story lines that resolve within the episode with arcs that run across a season.

• Procedural or episodic series: each episode has a self-contained story, such as a case of the week, with lighter serialized threads.
• Serialized series: stories run across many episodes, and each episode moves the larger plot forward.
• Limited series or miniseries: a single story told across a set number of episodes, with a clear ending.
• Anthology series: each season, or each episode, tells a different story with new characters.

Episode structure: teasers, acts and act-outs

Broadcast television built its structure around advertising breaks. A one-hour drama traditionally runs about 42 to 44 minutes of content in a 60-minute slot, divided into a teaser or cold open and four to six acts. A half-hour comedy runs about 21 to 22 minutes, often with a cold open, two or three acts and a short tag. Each act ends with an act-out: a hook, cliffhanger or reversal designed to keep viewers watching through the commercials.

Streaming series do not need commercial breaks, and episode lengths vary more. Many writers still write act-outs, because the structure keeps episodes moving and helps viewers decide to keep watching. Streaming episodes often end with a stronger cliffhanger, because the platform will play the next episode automatically.

A, B and C stories

Most episodes interweave several story lines. The A story is the main plot, usually involving the lead and taking the most screen time. The B story is a secondary plot, often lighter or more personal. A C story or runner is a small recurring thread, sometimes comic, that appears in a few short scenes. Good episodes connect their stories thematically: the A, B and C stories explore the same question from different angles, and they may collide at the climax.

The pilot

A pilot is the first episode of a series and a sales document. It must introduce the world and characters, establish the story engine and tone, tell a satisfying story of its own and make viewers want more. Some pilots are premise pilots, showing how the situation begins; others drop viewers into a world already in motion. Pilots are hard to write because they must do so much setup without feeling like setup. A common tip is to make the pilot a typical episode of the show, so buyers can see what week five will look like, while still telling a strong origin moment.

• Introduce the protagonist through action that shows their essence and dilemma.
• Establish the world's rules and the story engine.
• Tell a complete story that resolves within the episode.
• End with a hook that points to the season's larger story.
• Write a series bible or pitch document with season arcs and future episodes.

Writers' rooms

Most series are written by teams in a writers' room led by the showrunner. The room breaks stories together, building each episode's beats on a whiteboard before one writer goes off to write an outline and then a draft. The showrunner and senior writers then revise. Room sizes and schedules vary widely, from large rooms on long network seasons to small "mini-rooms" on streaming series that meet for a few weeks before production.

In Canada, the Writers Guild of Canada's agreement with the Canadian Media Producers Association sets minimum fees for episode scripts and, under the 2024 agreement, requires larger-budget series to keep story editors employed during much of principal photography.

Limited series and the season arc

A limited series tells one story across a fixed number of episodes, often six to ten. Structurally it is closer to a long feature divided into chapters. Writers plan a season arc with its own act structure: the first episode or two set up, the middle episodes escalate, and the final episodes resolve. Each episode still needs its own shape and an ending that pulls viewers forward. A common approach is to give each episode a different focus character or point of view while advancing the main story.

From short to feature or series

Many filmmakers use a short as a proof of concept for a longer project. A short can demonstrate a world, a tone or a central character that a feature or series would develop. Funders and producers sometimes ask to see a short before investing in a first feature by the same team. If you plan to expand a short, make sure it still works as a complete story on its own; festival audiences and programmers judge a short as a film, not as a pitch. At the same time, keep notes on the larger story: the characters, conflicts and settings that would carry 90 minutes or a season.