Tateishi, a man in his 30s working in the accounting department at a confectionery manufacturer, and Mitsuya, a man in the planning department, start dating in secret from their workplace. The two start a new life at the office, but Mitsuya is worried about what his colleagues think and becomes stubborn towards Tateishi. Meanwhile, while on a date, the two accidentally meet Suzuki, a lecturer at their new employee training and Mitsuya's senior from university, and the three of them go out to eat... As they face the difficulties of maintaining a secret romance, what will become of their love?