Follow an 11-year-old girl, Polly Pocket, inherits a magical locket that allows her to shrink to four inches tall, embarking on adventures with her best friends, Lila and Shani. The series follows their "petite power" and big adventures as they discover that being small isn't a limitation, but their greatest strength, while also protecting the locket from the villainous Griselle and Gwen Grande.