Eun-suh is a kind-hearted and gentle woman who was switched at birth with another baby. She was initially raised by a wealthy family, believing she was their biological daughter. However, after a tragic accident and subsequent blood test, it is revealed that she was not their biological child. As a result, Eun-suh is returned to her biological family, who are living in poverty, while the other child takes her place in the wealthy family. Despite these upheavals, Eun-suh remains humble and caring, adapting to her new life with grace and resilience. Years later, Eun-suh and Joon-suh, whom she had believed to be her brother, reunite. Joon-suh, now a successful artist, discovers the truth about their past. Their reunion leads to a complex and emotional love story, as they navigate the difficult emotions and social implications of their newfound relationship. Eun-suh's graceful nature and selflessness make her a beloved character in the series, capturing the hearts of those around her with her enduring strength and compassion.