Canggang Paper Boat

On a rainy night in Canggang City, a floating corpse was discovered on the beach. In the palm of the deceased's hand, he clutched a mutilated white paper boat. Detective Lin Shen of the Crime Unit was ordered to investigate the case, but the moment he saw the paper boat, he was completely swallowed up by the fear that had been buried for eighteen years. Amnesia of childhood, blurry rainy nights, children's cries, a dark past that was forcibly erased... As paper boat murders continue to occur, all clues point to a shocking old case that was covered up by power - the Guizhou Orphanage Massacre. The psychiatrist he trusts hides the secret of his missing sister. His respected immediate superior holds the tampered transcript from that year. His dearest mother tried her best to prevent him from recalling the past. When the truth was revealed layer by layer, Lin Shen felt cold all over. He is not the investigator, but the only child who survived the tragedy. And the mysterious murderer who had a meticulous layout and killed several people in a row was only here for him from the beginning. The paper boat drifts into the sea, and the truth sinks to the bottom. What did he witness on that rainy night eighteen years ago? Are the people closest to him protecting him or imprisoning him?