Some female guests staying at a certain hot spring inn. As they enjoy the pride of the open-air bath, something strange happens to their bodies... They struggle to breathe, their chests grow hot, and an indescribable pleasure surges from deep within, coursing through their entire bodies... The innkeeper had secretly mixed a powerful aphrodisiac into the bath. The women, unable to resist the induced excitement, are toyed with by men in the open-air bath.
