Working in the massive cave might allow Rebekah the chance to bring joy back to her family.But will it claim more than it gives? After tragedy leaves its mark on Rebekah Hardins family, she plans to help her parents and six siblings honor her beloved brothers memory and alleviate their poverty by working as a guide in the dangerous cave system. Kentuckys renowned Mammoth Cave presents profitable opportunities in for hardworking, capable men. But Rebekah is determined and if it means presenting herself as a himself, then shes up to the job. Under the wing of experienced guide Tolly Sanford, Reb begins to learn the complexities of the cave and the two are joined by an aspiring young cartographer, Devlin Bale. The university student has traveled to the hill country to map tunnelsnot to fall for a girl in disguise. Can the God who designed miles of underground astonishment shape Devlins ambitious plans and free Reb from the weight from the past?