The seventh installment may just feature a cherry tree, 300 caterpillars, one rotten horse, a magical archway, the Spirit of the Forest, and Crazy Barry Fungus

Good evening and welcome to a tale of forests, legendary beasts, dreadful villains, caterpillars named Graham, and a great big beefer of a cherry tree. But what dark secrets are hidden in that tree, where the leaves grow thick and green? Polly intends to find out, and she intends to find out by finding out. What will she find out? Find out by reading this book and you'll find out.