Kase Narumi (played by Nagasawa Masami), who works in a design company, and her husband Shinji (played by Matsuda Ryuhei) have long been in love. However, when her husband went missing and came back, she found that the other party seemed to have lost his memory and had no feelings for him. Everything around me is ignorant. At the same time, a bloody incident occurred among the people named Tachibana in the city...