Kiriko, who grew up in an orphanage, was taken in as a live-in housekeeper by the large landowner Hiratsuka family 24 years ago. Soon after, she was forced by the head of the family, Tomio, to perform services other than the duties of a housekeeper, and she tried to run away many times, but the young Kiriko had nowhere to go and had no choice but to serve him like a slave. The one who supported her during this time was Tomio's son, Yutaka. Kiriko was more than happy about Yutaka's feelings for her since she was born, but there was a secret between the two of them...