At a private hot spring bath in a traditional inn, a group of handsome but depraved men sneak in on beautiful female guests with loose defenses while they're bathing. The women's bodies are mercilessly assaulted by the gang's vile acts. Their faces and bodies trembling with pain and humiliation create an intensely erotic scene. Amid splashing hot water, the men repeatedly commit lewd acts as the women desperately try to escape. With no one to hear their cries for help, the sight of these women driven toward climax evokes an atmosphere like a graveyard soaked in the erotic waters of the hot spring.