A typical Saturday morning turns atypical when Josh Durbin, his brother Avery, Avery's girlfriend, and her brother are toppled near the core of the earth. Potahs, renegade refugees from the Potato Famine, discover them. Are the Potahs' friend or foe? Will Josh ever get to return his niece Kiera's pacifier to her? Will Joshie finish his summer assignment of writing a journal? Come along with Josh and the crew through the twists and turns of this adventurous plot!