To save her household from financial ruin caused by her husband's failed stock investments, Aki Kamiya takes a job at a housekeeping dispatch service promising high income. However, she never expected to be sexually exploited by the manager and clients. As the pleasure of creampie sex and the satisfaction of earning large sums of money begin to cross her mind, her resolve starts to waver. Initially forced into the manager's so-called "special physical service" involving creampie intercourse, she gradually starts offering the service willingly. This is a shocking, explicit story depicting realistically how a married woman falls into depravity.