Makoto married his older coworker and wife, Mariko. They were living a blissful life, but their boss, Oshima, who envied Makoto, threatened him, saying, "Women like Mariko, such a quiet beauty, are more likely to cheat." Driven by anxiety, Makoto, who still used a flip phone, gave Mariko a smartphone with a location tracking app as a gift. One day, while monitoring Mariko's movements, he noticed her heading towards the love hotel district. For three hours, her location remained stagnant at the love hotel...
