After losing both parents, Aimi lives with her brother Seiji. She starts working at a flower shop because she can't rely on her brother forever. One day, while delivering flowers, she suddenly sees a woman who looks like Renmi, a teacher from her alma mater, who has gone missing and whose whereabouts are unknown. Inside a suspicious bar, Aimi notices a familiar face among the men surrounding Renmi… It's undoubtedly her brother's boss. Aimi consults with Shuhei, a detective she's known since childhood, but…
