Detective Inspector Hideo Aoki learns that his case against ex-Governor Tamaki—one that he has been building for months—has been dismantled. Rattled by this directive, his life begins to spiral out of control, fueled by his obsession over the case, heavy drinking, and several repercussions too close to home. In an effort to help the emotionally unstable Aoki, the police department sends him to a remote Japanese mountain retreat.

What was supposed to be a relaxing stay for the recently suspended investigator instead becomes a hotbed of suspense. Soon, familiar faces, furtive glances, secret dinner conversations and lurking secrets make Aoki realize that the guests at the Kamakura Inn are not unrelated. It becomes clear that something beyond coincidence has put them together