Reika's relationship with her husband deteriorated after he was laid off, forcing her to take a part-time job to make ends meet. As a former full-time housewife, she struggled to adjust to working life, but gradually grew closer to her younger coworker, Jin, who taught her the ropes. One day, Jin invites Reika out for a welcome party. Reika, who suffers from chronic neck pain, agrees to go to Jin's place for a massage, unable to resist his persistent invitation despite the alcohol clouding her judgment. This leads her to his bachelor pad for the first time...