Married for eight years, Kanako lived happily with her husband in their new home. However, one day she began to feel an unsettling presence, as if someone was watching her wherever she went. Her anxiety grew steadily until, while her husband was away on a business trip, an unknown man suddenly broke into her house. Helpless, Kanako was violated by the intruder, who then threatened her, saying, "Don't tell anyone. I'm always watching..." From that moment on, she fell under the man's control, her daily life constantly under threat. She never imagined that the man she encountered that day would come to dominate her entire existence...