The Watsons have a doozy of a road trip as they plan out a journey from Flint, Michigan (one of the northernmost states in the United States) to their hometown of Birmingham, Alabama (one of the southernmost states in America). Momma plans out a meticulous route with several stops along the way to allow them to rest and sleep in motels. Her route plans for them to travel to Cincinnati, Ohio the first day, and stay there at night. Then, they would travel on to Knoxville, Tennessee, and stay there the second night. Finally, they would head on to Birmingham.
In the end, however, Daddy decides to drive through the night without stopping, so that they can save money on motels. While this frustrates everyone, they are delighted to get to Birmingham early. In the end, their trip takes them through Michigan, Ohio, Tennessee, Indiana, Kentucky, and Alabama.