Twelve years ago, Shen Yan was the youngest forensic pathologist in the industry until a miscarriage of justice ruined everything for him. Now he is heavily in debt and making a living by doing private work. An invitation letter from the "Chitose Island Meteorological Research Institute" is like a rope handed to him in the dark night: go to the island to identify a batch of biological samples, five days, 350,000.
On the day he landed on the island, an unseasonable super storm cut off all connections between the island and the outside world. The helicopter made an emergency landing, and the pilot Lao Zhou had his throat cut with a knife in the snowstorm. The iron door of the research institute slammed shut behind Shen Yan, and seven words were written in red pen on the whiteboard - "The first place has arrived, and there are twelve more."
There are twelve researchers on the island, plus Shen Yan, thirteen. Someone is systematically hunting them down one by one in the dark. Strangely, a silver key will appear next to each corpse, with a year engraved on the key handle, from last year to twelve years ago. Each year corresponds to the secret of a certain person on the island. Shen Yan soon discovered that these people's past encounters on the island were not accidental. An accident twelve years ago entangled the fate of all of them like a spider web.
And that "forbidden sea area" marked by a red circle on the chart, that water area that Lao Zhou desperately avoided, hid a secret that they thought had been buried.
The snowstorm is still intensifying, communications are completely interrupted, and rescue will not arrive until seven days at the earliest. But Shen Yan knew that the murderer would not wait until the seventh day. He must find that person before the next sunrise, because it was Lao Zhou who died last night, and at this moment - there is a new line of words on the whiteboard: "Who is the second place? Guess."
