Asako's daughter Emili is murdered in elementary school. Her four friends can't remember what they saw, and Asako can't forgive them.
Emili's friend Maki is now an elementary school teacher, but the lingering trauma from Emili's death causes problems at her job.
Convinced she is responsible for Emili's death, Akiko lives as a virtual shut-in until her older brother brings his wife and daughter back home.
Emili's friend Yuka now owns a flower shop, thanks to her married lover. But not even her police officer brother-in-law can assuage her loneliness.
Asako receives a tip about Emili's murderer's identity from Yuka. She follows the trail to a school in Yamanashi, and back into her own past.
