Jane Carter, a "mostly average girl," has long felt herself to be a side character in her own story. Her younger brothers are not only more interesting than her by the merit of being twins, but by having incredible drive for academia or sports. Their parents have careers that are anything but ordinary; mom sells houses with macabre histories (murder, hauntings, you name it) and dad is an animal psychologist. Even her high school friends managed to be remarkable, outgoing, quirky, and passionate. Jane, on the other hand, sees herself as nothing of the sort. Going off to college has made her longstanding normalcy all the more apparent. Even with her high school days behind her, Jane cannot help but slip back into the comfortable space their memories provide, but with hindsight being 20/20 she also cannot stop the journey of self-re-discovery she's unwittingly undertaking. Mean, Median, and a Mostly Average Girl is something of Perks of Being a Wallflower meets Again, But Better in that Jane's world was turned upside-down in what seemed to be all the best of ways thanks to her friends but now that they've all moved on with their lives, she's stuck asking herself how she can move forward.