The play tells that Luo Jian, the captain of the criminal investigation team, was ordered to investigate the theft of the ancient painting "Water Lily". Because of this case, Zhuang Wenjie, a college student, was known. Zhuang Wenjie has a super talent and belongs to a special genius. In the theft case, Zhuang Wenjie understood the thieves' mind and skills of stealing paintings, and successfully broke through the case. After this incident, Luo Jian, the criminal investigation captain, left a good impression. He valued the other party's talent in solving cases very much, but due to personal caution, he discovered that Zhuang Wenjie's true identity was the son of a robber, and decided to secretly observe Zhuang Wenjie's every move
With years of experience in handling cases, Luo Jian has been solving one case after another with the assistance of Zhuang Wenjie. From being unfamiliar with each other, the two gradually developed a deep friendship and became an invincible partner, but they seemed to find that Zhuang Wenjie had a certain purpose. Zhuang Wenjie mainly wanted to investigate the real truth of his father Zhuang Yaobai's case back then, and also felt Luo Jian's doubts about him, so the two gradually walked away to manage all the twists and turns. In the end, he believed that Zhuang Wenjie was a righteous person, but he just wanted to know the real process of his father's case.