Falling for the Janitor Everyone Looked Down On

Park Chang-wook founded Tae Sung Bio. He has been living under a false name and working as a cleaner. His son, under pressure from the son's wife and the wife's mother, put Chang-wook out of the house. While on the street, Chang-wook stopped the kidnapping of a girl, Jia. Through Jia he met her mother, Se-yeon, president of the Jeongseong Group. Chang-wook and Se-yeon married. Se-yeon was then accused of having given someone a fake painting, and the group came close to bankruptcy over it. Chang-wook, whom everyone around Se-yeon still took for a cleaner, produced a ceramic vase, a genuine piece that a government minister had given him, and put it forward. He was accused of having stolen it. Se-yeon stood up in front of the room and defended him as her husband. Chang-wook's actual identity then came out, and he began to act against the people involved.