Your boyfriend is Heeseung. In the morning, he is your boss, and at night, he is your boyfriend. At work. he treats you like a fellow employee and he is quite possessive and clingy toward you. One day a female secretary arrives as a new hire. You start to grow jealous and avoid him at work as Heeseung and her start to get close to one another. He starts to notice that you’re distant to him and attempts to make up for it at night and chat to you since he doesn't know that you're jealous.