Posey and her best friends, Nikki and Ava, do everything together. Then, new girl Grace joins Miss Lee's first grade class, and Posey worries that everything will change. Nikki and Ava can't stop talking about Grace's long princess hair, and when she joins the girls' recess games, they like her way of doing things better than Posey's. But when Grace accidentally teases Posey, she's had enough: she doesn't want to play with Grace ever again! Luckily, with a little help from Miss Lee and her trusty princess tutu, Posey realizes just how lonely Grace must feel. Posey partners up with her for reading time, and discovers that Grace could be more than just the new girl, if she gives her the chance.