A narrative can be described as a story or account of events, experiences, or the like, whether true or fiction. A book, literary work, etc., containing such a story, or the art, technique, or process of narrating, or of telling a story.
In summary the narrative is the way in which a story is told. It is possible to have different narratives of the same story as it is a very subjective process with no right or wrong.
Narrative is constructed when you begin to form relationships between images and present more than two images together. Your selection of images and the sequencing contributes significantly to the formation of the narrative. However, it is essential that you identity what your story is first before considering how you wish to tell it.