Aoi Teshigahara, a freelance writer portrayed by Miho Nakayama, resides in Paris, France. Sen Yagami, played by Osamu Mukai, is a photographer who has traveled to Paris at the urging of his younger sister, Suzume, depicted by Mirei Kiritani. Over the course of three days, Aoi and Sen develop a romantic connection. At the same time, Suzume reunites with her boyfriend Kango, played by Gou Ayano, with whom she has maintained a long-distance relationship.