The talented painter Lin Mo disappeared mysteriously on the eve of his art exhibition. Detective Chen Zhuangyan was entrusted by his sister Lin Xi to officially intervene in the investigation. There were no traces of external force intrusion at the crime scene, leaving only an unfinished and strange masterpiece "Three Days of Illusion". Lin Xi firmly believed that his brother was killed, but there was something strange about him. When Chen Zhuangyan was investigating the scene, he discovered that there were mysterious symbols hidden in the studio, which seemed strange. As the investigation deepened, Chen Zhuangyan learned about the existence of the secret organization "Mirror Society" through the fragmentary pages of his diary. Chen Zhuangyan sneaked into the Mirror Club salon and saw through their sinister means of using sound, light and chemical agents to create "time loops" and control people's hearts. At this time, Chen Zhuangyan accidentally discovered that Lin Mo was not an independent individual, but a split creative personality of Lin Xi. The "disappearance" case is actually a self-salvation planned by Lin Xi in order to get rid of his personality and compete for dominance. When Chen Zhuangyan confronted Lin Xi in the studio and tried to awaken her self-awareness, he was horrified to find that mysterious symbols appeared on his wrist. The reflection in the mirror turned out to be Lin Mo\Lin Xi's face, and his identity completely collapsed. Is he the game-breaker, or another mirror image in the puzzle? The truth gradually fragmented between reality and illusion, and the three-day illusion finally became an unsolvable loop.
