Super-serious Asahi Suzumura and easygoing Mitsuki Sayama may seem like an odd couple, but they made a deal — they'll vacation together around the world, and when they return to Japan, they'll get married.But after the first leg of their journey went so smoothly, perhaps it was inevitable that the next would hit some snags. Despite schedule mishaps and a surprise illness, the amazing food and new friends they find along their journey make up for any troubles. Even though they're far from home, each new destination is an opportunity to become closer to each other.