The Mossheart's Promise

From New York Times bestselling YA author Rebecca Mix comes the first book in a breathtaking middle grade fantasy duology about a young fairy who has always lived in her heroic grandmother’s shadow but now must step up and embark on a quest to save her mother from the ever-creeping mold overtaking their world. Perfect for readers who loved Brandon Mull's Fablehaven,The City of Ember by Jeanne DuPrau, and Endling: The Last by Katherine Applegate.

The mold takes all.

Twelve-year-old fairy Canary Mossheart knows this better than most. A few years ago, the mold took her papa, and even her famous, former-chosen-one Gran never found a cure. So when Ary's beloved mama falls ill, Ary decides it’s taken enough. Armed with only a bucket and a prayer, she sneaks out to find a magical, underground lake whose healing waters are straight out of Gran’s adventures. 

But when Ary gets there, the lake’s bone dry, and instead of healing waters, she finds a terrifying secret: Her entire world is actually trapped inside a giant terrarium—one they were meant to leave centuries ago. Worse, Gran knew and hid the truth, dooming Ary and her generation to a dying, rotting world.

Now, allied with only her doomsday-obsessed frenemy, a timid pill bug, and a particularly grumpy newt, Ary has one week to unravel the clues and find a way out of the terrarium—or they’ll be trapped for good. .




Genre: Children's Fiction

"A tender, touching, and thrilling exploration of how we can save the future by challenging the past." - Sofiya Pasternack

"In this immersive middle grade fantasy debut, Rebecca Mix crafts a larger-than-life cast of ordinary heroes who grasp hope in the unlikeliest of times and places. A thought-provoking and unflinching reckoning of what it means to be the 'Chosen One' in a thankless, dying world -- where yet, still, love burns bright." - Katie Zhao