Romance between "Obitna" without a back and "Seo Jihoon" with a back! In order to regain the power lost by a miserable broken marriage and resignation at the same time, the lingerie division will be established in cooperation with the representative of a rival company, who was the enemy. The two, who are also lovers, sometimes get into love affairs to avoid people's eyes.... But there seems to be a secret that I can't tell even the two people who seem happy at first glance...?