As a guy who hates getting attention, Hyungwon lived a simple life. Despite being rich, he chose to settle at an apartment far from his workplace. Nobody knew that he is the one and only heir to Mon Group. On the other hand, Hanseol had always lived a hard life. When she was fired from her work, she had no choice but to go to Seoul and find another job. How will two people with different status deal with each other? Can they build a good and harmonious relationship?