Things To Consider When Making A Film Opening

There are different features that need to go into a film opening:
- Enigma
- Character
- Setting
- Time Period
- McGuffin

Enigma
A person or thing that is mysterious, puzzling or difficult to understand
A riddle or paradox

A film opening should create enigma, a conventional film will create enigma.

Character
Main characters tend to be introduced in the opening of films.

Setting & Time Period

Setting and time period are shown in the opening of a film, through visuals and sound. They're are a important feature of a film to consider and they help the audience understand the story.

McGuffin
It is a plot device in the form of some goal, desired object, or other motivator that the protagonist pursues, often with little or no narrative explanation. 

The specific nature of a MacGuffin is typically unimportant to the overall plot.