John and Zack head north to Coeur d'Alene, Idaho where army veteran Newt, and his wife, Brooke, are building a tiny home on wheels with plans to travel the country after Newt completes his sixth and final deployment. John and Zack have their hands full with an ambitious, untested design - and when Brooke's mother Jan arrives in town to throw shade on the entire project, they're challenged to keep things on track and make Jan a believer.