After Wen Tang and her daughter are targeted in an arson attack, they follow clues left behind by Wen Tang's late mother. With guidance and cooperation from the police, they gradually uncover a major criminal case involving the trafficking of children's identities. Using their calm judgment and intelligence, they help the police secure crucial evidence. After overcoming numerous setbacks, they ultimately bring the criminal gang to justice. The victims whose lives were switched are legally restored to their rightful identities and begin new lives. This story conveys the unwavering belief that evil can never prevail over justice and that the rule of law protects the people, while celebrating the power of courage and family bonds.