Mizuki ended up living with her father-in-law after her mother-in-law passed away. Unlike her workaholic husband, her father-in-law always seemed to worry about her, and she began to trust him. However, behind his kindness, there swirled ugly desires. He was plotting to get his hands on the beautiful and attractive body of Mizuki. Unaware of this, Mizuki, in her defenseless state, was about to be attacked by her father-in-law's fangs...