Plot and story, and the screenplay as the plan for how a story is told on screen.
Cause and effect, three-act structure, the inciting incident, plot points, the climax and the resolution.
Techniques: ellipsis, flashback, withholding and releasing information, enigmas, foreshadowing, point of view and voice-over.
Character functions (hero, villain, helper and others), themes, interpretations, and how narrative engages us, with narrative theories such as Todorov's and Propp's as optional ways in.