Riho's husband unfortunately passed away in a car accident, and relatives came to share their condolences with her. Unexpectedly, her father-in-law appeared, the man who had left when her husband was very young. In front of everyone, her father-in-law appeared to be a kind and trustworthy person, but when they were alone, he became rude and was ready to take advantage of her right in front of her husband's memorial. Because she loved her husband so much, she always resisted, but gradually her father-in-law's skills made her suffer and sink into physical pleasure, accepting to become a plaything for him and others...