“Guaranteed free of unicorns and princesses, it’s fun, empowering fiction for 5-8 year olds.� David Nicholls, author of One Day “Every young girl should read this series!� Amanda Holden  Join best friends Katy, Cassie, and Zia on a series of amazing adventures as they work together to save the planet…  The friends’ latest adventure takes them to an enchanted forest where they set out in search of the biggest horse chestnut in the world. But all is not as it seems. The trees around them are dying—and where are the animals? As they try to work out a way to help, the girls discover how vital trees are to all life on Earth.  

"Guaranteed free of unicorns and princesses, it's fun, empowering fiction for 5-8 year olds." David Nicholls, author of One Day "Every young girl should read this series!" Amanda Holden Join best friends Katy, Cassie and Zia on a series of amazing adventures as they work together to save the planet... The friends' latest adventure takes them to an enchanted forest where they set out in search of the biggest conker in the world. But all is not as it seems. The trees around them are dying - and where are the animals? As they try to work out a way to help, the girls discover how vital trees are to all life on Earth.

Join Katy, Cassie, Zia and Luca as they work together to save the planet! The friends are having a sleepover when they discover that the usually fearless Zia always sleeps with the light on. To help her, they plan their first ever magical midnight feast! Soon, they find themselves in a moonlit forest surrounded by nocturnal creatures. But something isn't right - the animals don't know if it's night or day. The four friends and Thunder the cat race to the rescue. Can they save their sleepy forest friends before the clock strikes twelve?

Join Katy, Cassie, Zia and Luca on a series of amazing adventures as they work together to save the planet... While eating delicious honey on toast in Zia's garden, the friends decide to go on a hunt for a bees' nest. They'd love to learn how honey is made and meet the queen bee herself. Shrinking down to the size of insects, the group come face-to-face with giant garden creatures and learn just how dangerous the world can be - if you're a bee. Could this miniature adventure turn out to be their biggest yet?

"Guaranteed free of unicorns and princesses, it's fun, empowering fiction for 5-8 year olds." David Nicholls, author of One Day "Every young girl should read this series!" Amanda Holden "I loved learning about how the ocean is in trouble." Tess, age 6 Join best friends Katy, Cassie and Zia on a series of amazing adventures as they work together to save the planet... On the hottest day of the year, the friends imagine a water slide coming out of Katy's bedroom window. As they plunge into an underwater world, they can't wait to explore. But when they meet a dolphin in distress, they realise the ocean is in big trouble. It's so full of plastic that the sea creatures have been forced to flee their homes. Can the friends come up with a plan to put things right?

“Guaranteed free of unicorns and princesses, it’s fun, empowering fiction for 5-8 year olds.� David Nicholls, author of One Day “Every young girl should read this series!� Amanda Holden “I loved the meaning of this book – we should all do more to save our world.� Florence, age 7   Join best friends Katy, Cassie and Zia on a series of amazing adventures as they work together to save the planet…  Katy, Cassie and Zia find themselves transported into outer space when their rocket made out of recycled waste magically becomes life-sized. With the help of Katy’s cat Thunder, the girls navigate their way to the Wishing Star. But as they prepare to make their wishes, the friends see the destruction happening back home and realise they have a greater mission: TO SAVE PLANET EARTH.

"Guaranteed free of unicorns and princesses, it's fun, empowering fiction for 5-8 year olds." David Nicholls, author of One Day "Every young girl should read this series!" Amanda Holden Join Katy, Cassie, Zia and their new friend Luca on an amazing adventure as they work together to save the planet... Katy has adopted a Sumatran tiger - the most endangered tiger in the world- and she'd love to go on an adventure to meet her. While on a playdate, Luca's garden magically transforms into the Sumatran jungle. But no matter how hard they all look, there's no sign of the tiger anywhere. As they navigate river rapids and have a close encounter with a venomous snake, Luca and the girls discover the threats to endangered species. Can the four friends and Thunder help find the last female Sumatran tiger?

“Guaranteed free of unicorns and princesses, it’s fun, empowering fiction for 5-8 year olds.� David Nicholls, author of One Day “Every young girl should read this series!� Amanda Holden “I love this adventure! It’s made me want to save the world, just like Katy, Cassie and Zia!� Annabel, age 6   Join best friends Katy, Cassie and Zia on a series of amazing adventures as they work together to save the planet…  Winter has arrived, and the girls decide to cosy up with a picnic in the North Pole. But to their surprise the Arctic Queen gives them a frosty reception. Before they can enjoy snowflake-shaped sandwiches and mountains of ice cream, they must first understand how important it is to protect the polar animals’ habitat. But can they figure out how to stop the North Pole from melting?

'Guaranteed free of unicorns and princesses, it's fun, empowering fiction for 5-8 year olds.' David Nicholls, author of One Day Join Katy, Cassie, Zia and their new friend Luca on a series of amazing adventures as they work together to save the planet... When Cassie's cousin Luca joins the girls' school, they have the perfect idea to make him feel included: invite him to a magical playdate adventure. Together with Thunder the cat, they decide to go on a wild journey to the African savannah in their very own flying safari jeep. But when they arrive, the animals are in a frenzy. The watering holes are drying up and soon there won't be anything left for them to drink! Luca has an idea that might just save the day - but will the friends be able to pull it off?