Ai and Hana were romantically involved despite being of the same sex. After the two of them went on a short trekking trip together, they communicated their thoughts and promised to date. In the meantime, he gets lost on a mountain road and arrives at an abandoned guest house run by a man named Kita. It was a devil's cave where the local yakuza held lewd parties. Kita skillfully deceives Ai and Hana and gives them a villainous gangbang. In front of the vulgar men, they perform lesbian play, and pierce the pretty female genitals with a number of meat sticks so as to separate the hearts of the two people.
