Ena Makino is a young wife troubled by her husband's restrictions, from controlling her actions to dictating what she wears and who she interacts with. Feeling suffocated, she begins to rebel and starts cheating through affair websites. Her suppressed desires spiral out of control, making it impossible to stop her infidelity. Sakura Ninomiya married her childhood friend after reconnecting at a reunion, but their busy schedules leave little time for intimacy. Despite their weekly lovemaking, she finds no satisfaction.