The short takes place in a coastal town in Kumamoto at the end of summer 1996. Ten-year-old Minato leads a precarious life with his alcoholic father. His only source of strength is Ben-chan, a goddess appearing as a young girl on Benten Island. The time he spends with her is the only time he feels like himself. However, when he is about to be separated from Ben-chan because he is being sent to a children's home, Minato prays to a Shiranuhi, a mysterious light floating above the sea, to grant him one wish. His wish, filled with hatred towards his father, eventually becomes a curse.