Lawyer Li Jie intends to win custody of her one year old daughter, Duo-duo, while divorcing her husband. Li Jie seeks a nanny to help care for her daughter when she is busy with her job and divorce proceedings. She is introduced to a seemingly perfect choice, Sun Fang. Li Jie hires her with no question after seeing Sun Fang has a gift for calming little Duo-duo. One day she comes home to find Duo-duo and nanny Sun Fang missing. After being suspected by the police and criticized by her family, Li Jie starts her own search for her daughter and uncovers the dark and troubled past of Sun Fang in the process.