Zhu Shiyuan was switched at birth and grew up in the countryside, only to be mercilessly driven out by the family that raised her, who treated her as an impostor. The Shi family favors their adopted daughter, Shi Ran, allowing her to repeatedly frame and slander Zhu Shiyuan. However, Zhu Shiyuan possesses extraordinary powers of observation, enabling her to see through hidden conspiracies and uncover clues. After returning to her biological family, the Zhu family, she helps them overcome crises and uses her exceptional abilities to solve one long-unsolved cold case after another. Her talents attract the attention of a special investigation team, which offers her a special recruitment invitation. While dealing with the provocations of the Shi family and the fake heiress, she also assists in investigating various difficult cases. The true heiress who was once abandoned gradually uncovers layers of mysteries, protects those around her, and uses her innate gifts to pursue the truth.