Baihao (played by Liang Liewei) accidentally stepped into a secret circle called "Zero Degree Chat Room" in order to rescue a strange girl Xiaoqian (played by Rao Guijia) who was in a desperate situation and sent a distress signal. He was forced to complete layers of strange tasks, follow clues to explore the truth, but step by step he fell into the fog of reality and illusion. In the game between cold rules and human nature, Baihao not only has to uncover the dark secrets behind the circle, but also faces the obsessions of good and evil deep in the human heart, stick to his original intention in the fog, and explore the glimmer of redemption and justice. Adapted from the novel "The Longest Night 2" by suspense writer Cai Jun
