When eleven-year-old Daisy Thistledown arrives in London after her mother's mysterious disappearance, she discovers a hidden world called Greenwild—a magical realm where extraordinary plants possess incredible powers and where gifted individuals can communicate with nature. As Daisy searches for clues about her mother, she embarks on an exciting adventure filled with secret gardens, powerful enemies, and remarkable botanical magic. Along the way, she learns about her own unique abilities and the important role she may play in protecting Greenwild.