On her mother's grave, a college student Hinako strangely sees a flower of cosmos. Her father calls her to say that he can’t come back due to a typhoon, and repeats “Tamaran” in frustration. On the way home, Hinako buys a book “Tamaran Hill” and gets absorbed in it. While she reads in silence on the railway platform, spoken texts and the story spread in her head. The next morning, she finds that that flower was offered by her late mother’s sister Mizuki. She visits a cosmos honey farm where Mizuki works.