My only daughter, Ichika, whom I had raised with great care, finally got married. As a doting mother, I couldn't bear the pain of my daughter's departure, so I decided to remodel our home into a two-family house. My daughter and son-in-law were very happy, so I had high hopes for the future. However, after moving into the two-family house, my wife, Maki, began to act very strange. She would often go to my daughter's house and then leave for strange reasons...