When Nancy Clancy finds out that both her guitar teacher, Andy, and her favorite babysitter, Annie, have broken up with the people they were dating, she decides to make them fall in love on Valentine's Day.

When Ms. Glass runs out of Backward Day ideas, Nancy comes up with a way to celebrate the day.

Nancy, who likes to use fancy words, is excited to wear her elegant nightgown for Pajama Day at school, until best friend Bree and schoolmate Clara impress everyone by wearing matching pink polka-dot pajamas.

Nancy, who loves to use fancy words, and her friend Bree are proud to be the best spellers in their class, but when a spelling quiz proves tougher than Nancy thought, Nancy is faced with a difficult decision.

Lulu starts witch school and meets a classmate who is best at everything.

As her third-grade class makes its selections for the "Graveyard of Boring Words" and learns about "superb synonyms," slow-footed Nancy enthusiastically plays on the soccer team, with the goal of just being mediocre, or maybe even a little better than average.

Preparing for picture day at school by choosing just the right outfit, Nancy wonders how she should style her hair and considers pigtails, a bun, and long ringlets before formulating a plan that has her reaching for the scissors.

Collects six stories depicting Fancy Nancy's humorous adventures as she stays up late, wears her nightgown to school, observes the stars, bakes cupcakes for a bake sale, performs in a talent show, and writes a book report.