An accidental encounter brought Cheng Ling to the world set in the TV series "Sparrow". Here she met four men whose fate was intertwined with hers: the patriotic student Gong Zi, a childhood sweetheart, Ding Sihan, a business tycoon with a strange identity, Chen Shen, a funny and cheerful CCP agent, and Su Sansheng, a cute villain who longed for warmth. At the same time, Cheng Ling also met close friends Wu Xin and Li Xiaonan, and became "dancers" lurking in the depths. "Only the motherland and faith cannot be let down."