Narrative must be constructed by structure. A constellation of set events happens one by one in a storyline. This is the notion of narrative.

Nevertherless,

look at the other side about Cause and effect.

Cause and effect, as you see, is explain why things happen. Cause and effect is anything but structure because of accidental factor. We never tell a story within a frame of random cause and effect. One cause might lead to different effects We only can assume the effects but never control over the effects.