A traveling manga artist named Shimi meets a woman called Matryoshka-san at an event. The two find that they get along strangely well, and Shimi’s long‑planned mobile‑house road trip suddenly becomes a shared adventure. They set off across Japan in the small home on wheels, stopping at iconic locations such as the stunning scenery of Shikoku, a local festival in Hokkaido, and a beloved person’s shop in Miyazaki. Through each encounter and destination, they meet people they never would have encountered otherwise and discover emotions they had never known. The story follows their journey, capturing the warmth of spontaneous travel, the charm of the places they visit, and the growing bond between the two travelers as they explore the country together.