Childhood friends and university classmates, Yuri and Rei were traveling in a mountain village of a certain prefecture. They stayed at a trendy campsite and decided to hike down the mountain instead, but they got lost on the unfamiliar trails. As they wandered, the two found an abandoned inn… Inside lurked men who were like beasts hungry for women. They attacked the two young and healthy women, taking turns with several companions in intense breeding acts. Eventually, Yuri and Rei's personalities collapsed, and they degenerated into masochistic females.
