"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?