Suzume, 17, lost her mother as a little girl. On her way to school, she meets a mysterious young man. But her curiosity unleashes a calamity that endangers the entire population of Japan, and so Suzume embarks on a journey to set things right.

Freelance writer Aoi Teshigahara (Miho Nakayama) lives in Paris, France. Sen Yagami (Osamu Mukai) is a photographer who came to Paris, France due to his younger sister Suzume’s (Mirei Kiritani) insistance. Over the next 3 days, Aoi Teshigahara and Sen Yagami fall in love. Meanwhile, Suzume meets her boyfriend Kango (Gou Ayano), whom they have been in a long distance relationship.