Daisy Thisledown is on the run. She has escaped from boarding school, and she's depertae to find her missing mother. Now her flight will take her through a hidden doorway - and into another world.

Behind the door is the Greenwild. Full of incredible botanical wonders, this land of green magic holds the key to finding Daisy's mother. And someone wants to destroy it. Daisy must band together with a botanical genius, a boy who can talk to animals and a cat with an attitude to uncover the truth about wo she really is, and save the Greenwild itself...