Guo Xiaobei, an orphan with mild mental retardation, possesses a rare talent - he can see the deepest fear and darkness in other people's hearts. One day, the criminal police captain Jiang Yang found him. It turned out that Guo Xiaobei's brother Guo Hao, a psychopathic murderer who had been arrested, claimed during the interrogation that he had "five people living in his body." What's even more bizarre is that all the three corpse hiding places provided by Guo Hao came true, but he said that he was "just one of the personalities, and what the other personalities did had nothing to do with him." The police suspected that Guo Hao was pretending to be crazy to avoid the death penalty, but they could not explain why he could accurately describe details that only the police knew. Until a police officer from the task force died mysteriously while investigating the case. He had a strange smile on his face before he died and left a note at the scene: "Ask Xiaobei to come see me." Guo Xiaobei was involved in this serial case. When he first came into contact with his brother, what he saw was not the heart of one person, but five completely different consciousnesses, each with independent personality, memory and crime patterns. What frightened Guo Xiaobei even more was that he discovered that there was a "core personality" in his brother's body that had never appeared before - and that personality knew every secret of Guo Xiaobei.
