Unpei Mochizuki, a second-year employee at a machine part wholesaler, makes a mistake that causes problems for his clients. Feeling upset, he thinks about running away to a place where no one knows him. That's when he meets Tsugumi Nagisa, a picture book author with a youthful face and glasses, who travels around with her dog in her car, which they use as their home. They spend their days on the road, living in the car and enjoying a new way of traveling, free from any schedule.
