After experiencing a poltergeist phenomenon, Mariko began to lose her eyesight due to the resulting trauma. Miyako, despairing over her father, Koichiro Maeda, attempted suicide, and Hiroko mistakenly believed this was due to Mariko's bullying and severely reprimanded Mariko. Hiroko is unaware that she is Mariko's biological mother. Fearing that Hiroko's amnesia would be cured, Maeda ordered his subordinates to kidnap Hiroko, and Ryuichi and Noboru followed them. Now, various people's intentions and motives intertwine surrounding Hiroko's lost memories, which hold the key to all the incidents...