Camping by bike, if you like it, that place becomes our home. Even if civilization has perished, and no one is around, the world is filled with the charm of travel. The fourth volume of the unique touring comic featuring Serow! After sightseeing in Oarai, Yoko and Airi race through the Irohazaka in Nikko and visit hidden gems in Saitama. Then, they venture out of the Kanto region to the Venus Line in Nagano. The two's leisurely post-apocalyptic bike journey continues――.