Being a big sister to a new baby brings big responsibilities. Sona Sharma's house is full of people who joke often and argue sometimes. Relatives come unannounced, the phone rings frequently and friends drop in all the time. Then one day Amma tells Sona she is going to have a baby. Is that good? Sona isn't sure – she has always enjoyed being an only child – and straight away she has a word with her best friend, Elephant. When Sona learns that there will be a baby naming ceremony, she is determined to find the perfect name for her new brother or sister. Because although she realizes that her life is about to change, and while she's having some difficulty in coming to terms with having to share everything with the new baby – including Amma and Appa, her grandparents and her home – Sona Sharma wants to be the very best big sister she can be.

Sona Sharma combats climate change. When Sona learns about the climate crisis at school and is very worried that no one is doing enough to combat it, she takes up the challenge herself. But Appa isn't amused when Sona throws out her baby sister's nappies and Thatha isn't happy when she tells him to get rid of his colour-coded plastic files. When Sona learns that many of the kolams – the traditional art that people draw in front of their homes to celebrate the winter months and the festival season – are not organic, she sets out to make some big changes by getting everyone involved.

Sona Sharma, who lives in India, learns all about school elections, the ups and downs of best friends, and how to choose what matters most in life."Warmly loving and evocative" The GuardianWhen Miss Rao announces that there's going to be an election for Class Leader, Sona is excited to stand as a candidate – until she finds herself competing against her best friends, Joy and Renu.When the three girls fall out, Sona must decide what matters most – winning the election or proving herself to be a true friend indeed . With the support of her wise family, perhaps Sona can learn that there is often more than one way to be a winner.

Sona Sharma lives in India with her busy family, where she learns about the ups and downs of family, friendship and life."Warmly loving and evocative" The Guardian Sona and her friends are excited to learn their beloved teacher, Miss Rao, is getting married – but then they panic that she might leave their school for ever after her wedding! They try all kinds of tactics, like wishing on a peacock feather and even starting a petition to keep Miss Rao. But Miss Rao's beautiful Indian wedding has a surprise in store for the girls.