Mitsuha, the daughter of a wealthy family in a certain prefecture, grew up in a very wealthy private life, knowing neither filth nor hardship. One day, a servant named Hirai attacks Mitsuha and kidnaps her. Hirai was fired after being criticized by Mitsuha's father for his work attitude, and so he killed Mitsuha to get revenge. Hirai then offered Mitsuha to Nakata, a yakuza who owed him money... The curtain rises on a month of intense sexual feasts until the pretty young lady becomes pregnant.