When Moses and Tom flee their Kentucky home to find freedom in Canada, their journey is beset with danger. From spine-tingling sounds coming from the dark woods to slave catchers hot on their trail, fear is their constant companion. Can Moses and Tom trust the two men on horseback who offer them aid? Across the Ohio River in Ripley, young Will Butler fears the consequences of the Fugitive Slave Law if he helps runaways. But after hearing Rev. John Rankin's compelling message, the entire Butler family becomes a link in the Underground Railroad. Grampa told the boys to trust God, but will Grampa's prayers be enough to get them safely through the snake-filled Great Black Swamp? A life or death decision stands between them and the steamship at Lake Erie. Will Moses and Tom ever be free?