The setting of a story is both where it takes place and the time. It can add to the mood, foreshadow events, and impact the characters. A stroll through a forest conjures different thoughts, images and expectations in comparison to a stroll down a city block.
How important is the setting?
For my novels, it was what inspired the stories.
In 'Camouflage', the acres of preserved woodlands in Quarry Head Park, with its ledges offering views of valleys that rolled to the Long Island Sound, made me wonder--what's out there that we haven't discovered. In the story I'm working on now, the Great Lakes and how they formed with the land set the stage for kingdoms.
Think of your favorite writings. In some the setting is so rich it may feel like another character.