Riq, Sera and Dak are three time travelers on a mission to save history, but they're totally unprepared for the year 1850. With the United States divided on the issue of slavery and the threat of civil war looming, runaway slaves in the South are looking to the Underground Railroad for help escaping to freedom But there are traitors in their midst. Now Dak and Sera are left wondering who to trust while Riq risks everything to save the life of a young boy.