Ordinary person Song Ziqing had her identity replaced in her early childhood, and after forty-five years was found by her biological Su family, only to discover that the other party only plotted for her healthy organs. Her daughter Jiang Qingning is proficient in network technology, adheres to the bottom line of the law, and exposes a series of calculations and frame-up evil acts of the Su family with a complete evidence chain. The mother and daughter strictly guard their original hearts, never actively retaliate, and only rely on law enforcement agencies to punish the wicked and evil, guarding the innocent people around them. The Jiang family is of one mind toward goodness, adheres to legal principles and warmth, and interprets the national and patriotic background of abiding by the law and goodness, guarding close relatives and justice in the world with the upright character of ordinary people.