On Cassie's seventh birthday she made a new friend - Stella Starkeeper. Stella lives in the sky and uses the magic of the twinkling stars to make wishes come true! After passing six tasks Cassie becomes a Lucky Star - someone who can can grant wishes, helped by her magical charm bracelet. But disaster strikes when Cassie's bracelet goes missing and Stella's powers begin to fade . . . Cassie must search for other Lucky Stars who can help her find the bracelet. But before a Lucky Star is able to share their magic, Cassie must first make a wish come true for them.

In book eight, THE SLEEPOVER WISH, Cassie meets a Lucky Star called Hannah, who lives on a farm. The baby lambs are being born, so Hannah's mum and dad are too busy to plan a birthday party for her. Hannah loves being on the farm but she still wishes she could have a birthday sleepover.