A cruise ship encounters a mysterious shipwreck, and passenger Qiao Qichi and a group of survivors live on a desert island. Qiao Qichi, a young former forensic doctor with a gloomy personality due to past trauma, wakes up here. Survival is not the only problem. Traces of artificial transformation and strange creatures remain everywhere on the island. Under the seemingly united appearance of the survivors, undercurrents have already been surging. Qiao Qichi discovered that this disaster may not be an accident. Among the survivors, there is at least one or more "traitors" who know the inside story and even dominate everything. He must rely on his morbid keenness for details and knowledge reserve to uncover the hidden malice in the clues of every accidental death and every lost item in the daily farming life of building shelters and searching for food. Trust is a scarce commodity and truth is the key to survival. In the spiral of suspicion and betrayal, Qiao Qichi will be forced to face the abyss of human nature and uncover a terrifying plan behind this island that can subvert everyone's cognition.