The trailer introduces the main characters, setting, and premise of the film in the beginning. It establishes the character, tone, and genre of the movie within the first few shots and dialogue. The opening of a trailer summarizes the essential who, what, when, and where information for viewers to understand the story being told.

1. Movie trailer
 Character, tone, setting, genre
 The beginning of your trailer should introduce the main
characters, the setting, and the film's premise