The woods of Bramblebrook are in danger, and the future of the village's beloved Summer Festival hangs in the balance. But when the Curio Club finds a mysterious note hidden in Maggie's Curios, they uncover a secret that has been waiting for decades—a metal box hidden in an old well, holding the key to saving their home.

Armed with courage, friendship, and a trail of clues left by the village's past guardians, Lila, Jake, Mia, Toby, and Clara must outsmart the dangerous Mr. Hawthorne, navigate the hidden tunnels beneath Bramblebrook, and solve riddles that lead them to places they never imagined. From the Whispering Statue in the churchyard to the magical Memory Garden, they will discover that Bramblebrook is full of more secrets—and more magic—than they ever dreamed.