According to the Ministry of Civil Affairs, the number of homeless and begging children in the country is around 1 million to 1.5 million. In some rural areas, the sale of children is almost market-oriented, forming a complete underground black profit chain. The blind little girl Jingjing (played by Du Hanmeng) has been begging on the streets to make money under the control of a criminal gang headed by Guo Wei (played by Hu Ming). One day, she met Zhao Liang (played by Li Yang) in the subway passage. Zhao Liang is a down-and-out rock uncle who pretends to be a blind man to cheat all day. In order to escape Guo Wei's brutal beating, she went to the police station under the leadership of Zhao Liang, but the policeman Wang Lili (played by Yu Yue) couldn't find Jingjing's home at all. Jingjing said that Zhao Liang was her father. In desperation, Zhao Liang had to take her in temporarily. In the end, the criminal gang found them and took her away as Jingjing's "guardian". What is the relationship between Jingjing and the criminal gang? In order to figure it all out, Zhao Liang embarked on an unknown journey. And his story with Jingjing has just begun...