Todorov's narrative theory:

Todorov's narrative theory: A film that is used in a linear structure consisting of a beginning, middle, and end. 

Here is a video explaining Todorov's narrative theory:

Equilibrium: 

The beginning of the film where the location, characters and date is specified. Generally, nothing out of the ordinary happens in the film during the Equilibrium period and everything is as it should be with no disturbance. 

The Disruption:

During this period, this displaces the Equilibrium as the film focuses on a major disruption that the characters are possibly oblivious to or yet to recognise. Thus, this leads to disequilibrium. 

Recognition:

Upon realising the disruption, the characters begin to face a potential dilemma that they must sought to. This often appears during halfway through the film.

Attempts to Resolve:

During this stage of the film, the focus is primarily on the characters trying to remedy the situation, but ultimately struggling or failing to resolve the dilemma they are in.

Repair:

By this stage, the film is nearing to the end and the characters have finally deciphered how they are going to resolve the situation and ultimately succeed. 

Closure:

Occurs at the end of the film in which a new Equilibrium is established and everything is often back to how it was, reminiscent to the beginning of the film. 

For example, this structure is used in the film Superbad: