Three criminals escape from prison and break in a seaside house to wait for the getaway boat. They subdue four aspirant actresses and three men and rape and torture them.
The leader of the camp undresses, sits down on the bed and pulls off woman slip. Then he penetrates and starts raping her, while the woman is trying to grab the hidden knife.
When Naoko was a freshman in high school she was kidnapped and imprisoned by a man who lived next door. For one month, she went through hell. Finally, she killed the man and escaped.