Noboru married his former boss, Yurika Aoi, and the two were enjoying a trip together when they got caught up in trouble. One day, while Noboru was driving, he made a mistake and collided with a parked car. Some men started yelling at them, but they were let off at the scene. However, the couple had experienced a similar rear-end accident in the past, during which Yurika, then Noboru's superior, got involved with yakuza thugs. Fearing a repeat of that traumatic incident, the couple grew anxious. And their worst fears soon began to come true.