Once the founder of Tae Sung Bio and now hiding as a cleaner, Park Chang-wook is pushed out by his son under pressure from his wife and mother-in-law. His life takes a turn when he saves Jia and later marries her mother, Se-yeon. Framed for a fake painting, Se-yeon faces bankruptcy. Chang-wook steps in with a genuine artwork but is branded a thief. As Se-yeon defends him, his true identity emerges.