A group of people go to a summer house for a vacation, unaware of the perils they will undergo during their stay. A school doctor who accompanies them plans on blackmailing one of the women in the group as he got hold of her diary.
Preparation for the cultural festival have begun. As president and vice president of the student council, as well as a couple, Reiko and Shintaro are given the jobs of keeping tabs on the preparation together. While browsing through campus