When network security expert Lin Xia was sorting through his father's belongings, he discovered an encrypted notebook and uncovered clues to an unsolved case ten years ago - the darknet codename "3.14" Of "Raven", the main criminal in the transnational human trafficking case investigated by his father. The video in the hidden section of the notebook shows that the sapphire ring auctioned by Raven is now worn on the hand of newly elected congressman Shen Zhiyuan. Shen Zhiyuan was the only survivor of the case, but he received anonymous threatening items, implying that he was related to the case. Lin Xia traced the IP and found that Shen Zhiyuan's team had a huge amount of cash that matched the amount of darknet transactions. She pretended to be a buyer and traded with "Raven". Shen Zhiyuan appeared to reveal the truth, implying that her father's death was related to the case. Lin Xia received an anonymous email and discovered that her father and Shen Zhiyuan were holding the same sapphire ring, which was actually the darknet database key. In the end, Lin Xia realized that she was being monitored by the dark web, and the raven cufflinks on Shen Zhiyuan's suit revealed his true identity. The chess game reversed, and the truth became confusing.
