The moon is stuck. Sunlight is a distant memory. And the Night Mother, who once represented harmony between the living and the dead, has been thwarted by the girl who lives in the graveyard named Madeline Tock.

But after their daring escape to the Moon, Maddy and her new friend, Nura, have accidentally shattered the Night Mother's lantern and the stolen souls within it have escaped, including the soul of Maddy's father. Maddy and Nura follow the souls into the cavernous city spiraling down into the Moon's largest crater. There, Maddy and Nura will face nightfire, the dreaded Sleep Ensemble, and the many crooked corridors of the Night Mother's Lunar Mansion. If they survive, they just might be able to right the wrongs of the Night Mother and free the souls she took from the living. But their journey will bring everything to bear on Maddy, who has an impossible choice to make: become the next Night Mother and rescue her father's soul . . . or stay true to herself and risk everything.

Storytellers Jeremy Lambert (Goosebumps) and Alexa Sharpe (Lumberjanes) reunite to weave an evocative and magical tale of a young woman discovering what's faithfully in her heart.