Haruna Tsutsumi’s graduation thesis is on bizarre disappearances, and as part of her research, she visits a girl named Sumiko Hayama, who went to Kisaragi
Station and went missing for seven years, but returned alive.

Sumiko tells her how to get to Kisaragi Station, and what happened there. She follows the directions she was given and gets on the Enshu line on the train that leaves at 11:40 PM. Just like she was told, she arrives at Kisaragi Station. She and the other passengers follow the route that Sumiko told her to get home, but bizarre incidents happen to her…