I have been married to my husband for 15 years. Her only son, Tomonori, was blessed with good friends and Reiko was living a happy life. One day, Reiko, who was driving her car, had a collision accident. Luckily, she was not injured, but Reiko panicked and left the place alone. She doesn't know that her son's classmate is watching the situation... Reiko returns to her house and regrets what she did earlier. Then the chime of her house rings...
