It might also be a story that is so honest and raw that it feels like it's laid out completely exposed, without any pretense or sugar - coating. For example, a memoir that details a person's difficult upbringing without trying to make it seem more palatable than it was. The author bares their soul, so to speak, and shares their experiences in a very unvarnished manner.
Another interpretation could be a story that is set in a state of 'nakedness' in a metaphorical sense. Like a story about survival in the wilderness where characters are stripped of their modern comforts and conveniences, just like being naked. This kind of story often explores the essence of human nature when faced with basic needs and challenges.