Lin An'an won recommendation qualifications based on her excellent research achievements, but was maliciously replaced by the wealthy girl Liu Xiaoyue in league with a school board member and was kidnapped. To save his granddaughter, her grandfather, who has been living in hiding, picks up his honorary identity again to face the powerful. In the end, with the help of his former students and righteous forces, he exposes all conspiracies, brings the truth to light, and not only seeks justice for his granddaughter, but his own glorious deeds also shock the entire internet.