Kaoru and Satsuki, two married women who came to a hot springs trip to get away from the noise of their family life, were approached by a group of sleazy men while enjoying themselves. They ended up drinking with them, and when they woke up drunk, they found their ripe bodies being played with and penetrated. Their resistance was in vain, and their bodies were forcibly turned into women in the room and bath, and they were continuously violated and inseminated all day long, eventually succumbing to their fate.