Yoon Da-young, an elite secretary in the secretarial world, who has both a sharp job and a beautiful appearance. She is perfect in all aspects, such as perfect work, strict separation between public and private affairs, etc. She is forced to change jobs due to her boss's scandal. That night. On her way home from her part-time job, Da-young, who is in trouble by a drunkard, meets a man and receives help. Even that was not enough, an unexpected hug, an exploding nosebleed, and even a kiss. "If you're grateful, repay." yes? "Lips, nosebleeds, lifesavers. Isn't it something to just skip over?" Da-young runs away after giving the night flyer to the man who persistently wants her to repay her, claiming that it is her business card. The man is the chairman of his new company, the Koryo Hotel. Kang Do Hoon's line without even dreaming. "Ah~ this is where you moved to, right? It's not a night." ruined. Is the dismissal confirmed from the first day? A sweet and bloody office romance between Yoon Da-yeong, a woman as attractive as the thickness of her glasses, and Kang Do-hoon, an arrogant man!