Princesses Lilli and Meg have joined their father, King Errol, at his castle to meet their new stepmother, Eleanor.

Adventurous Meg catches an intriguing glimpse of movement in a forbidden part of the castle and decides that she must explore and find out what lies behind the screens.

A game of hide and seek sets in motion a series of meetings and events that will reveal devious plots within the castle, introduce the girls to Nettie and the Knitterati, and lead them into an ever more dangerous world.

What lies in the forbidden area? Can the girls help new friends and save the day?