Ava, Ellie, and Griffin never had a teacher like Miss Snoddy ... not even close! They are in awe of her amazing stories about our country's history. When they learn about the Civil War, the friends are saddened by the treatment of slaves and the number of families separated and broken apart. After studying Harriet Tubman and the Underground Railroad, the friends are determined to help. When they remember Miss Snoddy's special link to history, they convince her to take them on another adventure. They don't realize the dangers that await them as they help a family of slaves traveling North, and soon are running through forests and swamps to escape the slave-hunters and their hounds. They hope Miss Tubman's survival skills and Miss Snoddy's shoes will be enough to return them safely home.