In the drama, Song Yun'er plays the role of Jin Yunzhen, who used to be a doctor and became a full-time housewife to focus on her child's education. Through her husband's recommendation, she meets a surrogate mother for the entrance exam, and the two form a deep friendship. Kim Suk yeon plays the mysterious exam nanny Risa Kim. She targets children who come from the United States for training
In the drama, Song Yun'er plays the role of Jin Yunzhen, who used to be a doctor and became a full-time housewife to focus on her child's education. Through her husband's recommendation, she meets a surrogate mother for the entrance exam, and the two form a deep friendship. Kim Suk yeon plays the mysterious exam nanny Risa Kim. She targets children who come from the United States for training