O Que Houve com a Secretária Kim?

Young Joon has never been turned down by anyone for his entire life. However, Kim Mi So, his secretary, suddenly tells him that she will quit her job. He is suddenly confused by why she would quit and asks for advice from his friend. After hearing his advice, Young Joon tries everything he can to make Mi So stay.

Mi So reveals Young Joon’s secret to Ji Ran to make her give him up. Young Joon does not really understand why Mi So wants to quit her job, so he proposes to Mi So to keep her on his side forever. However, by his great surprise, Mi So rejects Young Joon’s proposal and leaves him dumbfounded and even more confused. Yoo Shik gives him a friendly advice about how to win a woman’s heart.

Young Joon calls Mi So out to the amusement park and gives her retirement present. Mi So gets touched by Young Joon’s new attitude. Mi So, who only cared about her job, goes out on a blind date. Young Joon hears about Mi So trying to get into a relationship and feels anxious about Mi So being with other guys.

Young Joon gets infuriated with jealousy after Mi So went to the blind date. They visit Yumung Group’s art center to expedite the opening, but accidentally trapped in the library section and spend a romantic moment together. Meanwhile, Young Joon’s brother Sung Yeon returns to Korea after 3 years abroad to visit his family. However, something is not quite right the way Young Joon greets his long waited brother home.

Love and an ordinary way of life are not in Vice Chairman Lee’s repertoire, but he makes a valiant effort to profess his feelings to Mi So, his personal secretary, who feels otherwise. However, he continues on with his heart fighting off his elder brother, Sung Yeon, who suddenly appears in Mi So’s life, and finds a way to apologize to Mi So for his actions. Meanwhile, a wager on Mr. Ko suit rustles up the workplace.

Mi So requests a leave for the first time in her nine years of service. But she does not know what to do and where to go because she never had a leave before. Meanwhile, Young Joon, who can’t deal with Mi So’s absence, misses his secretary so dearly that he compromises to resolve his loneliness by joining Mi So on her day off. With great surprise, she gets a phone call from her blind date, Byung Heon, and finally hears about the boy whom she has been looking for.

Secretary Kim grows closer to Sung Yeon knowing he was the one she was with when she was kidnapped. They visit a similar area they were kidnapped hoping it will help them remember fragments of their lost memory. The sight of Secretary Kim and Sung Yeon together drives Vice Chairman Lee mad to the point he professes his love to Secretary Kim once again. The tension between the two brothers heats up, while Gui Nam does everything he can to keep his ordeal a secret by following Ji Ah to the company retreat.

Young Joon invites her to his house for dinner. Although she has visited his house almost every day for the last eight years, Mi So feels totally different this time and gets very nervous. Young Joon awaits her with a surprise gift to make her heart melt. Later on, Young Joon and Mi So get to celebrate the opening ceremony of Yumyung Art Center. Now everyone’s eyes are on the Book Concert, and there Sung Yeon makes a disturbing speech. Mi So can’t help herself but worries about Young Joon only. What’s wrong with her?