The summer holidays are here, and Hannah is wishing she could have gone to drama camp. Instead it looks like she's going to end up being an unpaid babysitter to her younger brothers and sisters. Then she meets Meg, who has just moved in next door, and together with her friends Ruby and Laura they decide to form Star Club - a drama club of their own, where they'll all get a chance to practise their acting skills.The girls work hard to get their first show ready for Maisie's birthday party. Then disaster strikes, and Hannah finds herself torn between Star Club and big sister duty. Meanwhile, something very strange is going on with Meg, who seems to have a lot of secrets she's not sharing.