Sachika Akimoto moved from Osaka to Tokyo when her husband started his own business. She had dreamed of city life, but with no friends and a husband too busy to pay attention to her, her loneliness only deepened. One night while he was away on business, she went out for dinner and met Jun at a bar. Driven by loneliness and a growing desire to cheat, she begins meeting him for one affair after another, chasing the pleasure she has been missing.