You Hao Yun is a Korean who lives in Shanghai with her family. Her biggest dream is to become a famous pianist. Wanting to move away from her family, Hao Yun and her friend Xiao Mei rent an apartment, but later she finds out that there is no empty apartment and that the estate agent had run away with their money. Not having time to take care of his son, Wang Zhi Hao offers Hao Yun a job as a nanny and a place to stay. So Hao Yun, who is too afraid to tell her parents about the incident, agrees to take the job as a nanny. So they sign a 3-month contract... This is also a story about following your dreams and confronting your fears.