Inukai Takashi plays Chang, who thinks he has a happy marriage. One day, he witnesses his wife Aiko having an affair with her boss in the office. He can't believe that Aiko has betrayed him, so he decides to take revenge on Aiko who is loyal to his desires. Aiko, played by Hori Miona, pretends to be innocent in front of her husband, but actually has an affair with her boss, and is proud of herself for walking between two men.