A hospital located a little way from the city center. It doesn't have the latest equipment, and it doesn't offer any special treatments. However, everyone involved in the hospital is warm and friendly, and is loved by the local residents. The smile of Mukai, a nurse who has worked here for three years, is a breath of fresh air. However, on the other hand, there is no end in sight to the serial suspicious deaths, and rumors of them are becoming a bit of a topic of conversation within the hospital. At the time, no one realized that the evil hand was approaching...