Seventeen days ago, it was a nightmare. In the dream, a man with blood on his head said to her: "Run, run quickly..." When she woke up from the dream, her memory was fragmented, and there was a mobile phone in her hand. The shadow of fear is like a gangrene attached to the bones. In order to get rid of the nightmare, Zhao Mengqing had to face the broken image, and thus met Fan Ange, who also came for the same thing. There is a puzzle of the truth hidden in the hearts of both of them. One is eager to escape, and the other is forced to solve it. As the mobile phone password was cracked, a huge network of relationships slowly unfolded in front of Zhao Mengqing. People with different identities are entangled in it, everyone is so mysterious, and they all want to get something from her. Fortunately, Fan Ange followed her all the way. Although she was sometimes at a loss what to do, he also gave her the courage to continue exploring. When the facts gradually peeled away from the fog, the abandoned corpse in the river, the dead pregnant girl, Lin Jixue who fell from the building... All the clues finally pointed to the famous Futian Hospital. What is the connection between the mobile phone that everyone is flocking to and the hospital that harbors evil? The puzzle of the truth cuts through the darkness piece by piece. Can they gather the scattered fires into a sky-high flame that illuminates the dark night? Going back and forth day and night, each returns to the sea of humanity. Seventeen days later, maybe it started.