Lee Young Joon is the heir to a prestigious company that he holds with an iron fist. He considers himself to be the embodiment of perfection. So when his secretary, Kim Miso, tells him that she wants to quit to find a boyfriend, it's a cold shower! What's got into him? To keep her with him he is ready to do anything...

In this fifth stallment, Miso is in the hospital! Yeongjun is really worried about her, especially now that both of them have confessed their feelings for each other and their relationship is real. The arrival of Miso's father, a very unconventional man, will make them rethink what kind of future they want together. What might happen if someone in the office finds out about their relationship?