It's a responsibility of the writer to get the reader out of the story somehow.
I don't have a plan for a story when I sit down to write. I would get quite bored carrying it out.
I tend not to know what the plot is or the story is or even the theme. Those things come later, for me.
Once I've discovered the story, I might restructure it, maybe move things around, set up a clue that something is going to happen later, but that happens much later in an editorial capacity.
When I write my novels I don't really have a huge plan beforehand; I don't have the whole plot and architecture, so the story is sort of discovered as I write it.