Kaori (Kaori) is married and lives a happy life with her beloved husband. One day, on her way home from shopping, she sees her father-in-law Ginji standing in front of the house. Feeling sorry for her father-in-law's depression, she decides to let him stay at her house for a while... The lustful Ginji, feeling lonely, begins to follow Kaori who is busily taking care of him, and before long, he even ends up peeking at the couple's lovemaking. Seeing this, Ginji comes up with a plan for Kaori, and in the middle of the day when they are the only ones at home...