Well, then, let's start with the million dollar question: What's a Sequence?
A Sequence is a collection of scenes centered around a central question. This question revolves around a Sub-Goal, as opposed to the Main Goal of the movie. For example, In Star Wars, the Main Goal of our heroes is to "Defeat the Empire, rescue the Princess!" but they have to build upon many sub-goals to achieve that end. "Will our Heroes escape from The Death Star?" is a sub-goal. "Will our Heroes destroy the Death Star?" is another such sub-goal.
Or let's take the recent movie, Nightcrawler, which you must have surely seen it by now because you love great movies, Bloom's Main Goal is to build his empire and get rich. Throughout the movie we see him rise as he achieves his sub-goals. At first, it's "Will he get a great shot of a crime scene?" then it moves to "Will he be able to sell his crime scene footage to a TV Station?" and so forth.
Building your movie using Sequences allows you to keep your main character active and changing your protagonists' goals is a good way to keep your audience's attention. After all, if your protagonist is after one thing the entire time using the same method, it's going to get rather stale. Imagine if Bloom in Nightcrawler spent the entire movie trying to get a perfect crime scene photo... That's rather simple, isn't it? But if he gets a photo, sells it to the news station, then, ultimately, evolves to creating the perfect crime scene... Then there is a sense of escalation, a sense of build upon his victories and defeats on his way to his Main Goal.
Each Sequence runs for 12-15 pages and you will usually find movies have Eight of them. Two in the First Act, Four in the Second Act, and, finally, Two in the Third Act.
Why, you may ask. How did this concept of a Sequence originate?
Stay tuned in for next week's episode: "What is the 1st Act?"