My name is Song Yan, and on the 103rd day of my stay on a deserted island, I discovered that this world is full of flaws - there are drones hovering in the clouds, micro pickups hidden in the cracks of the rocks, and even the "survivors" who share the joys and sorrows are secretly reciting lines. The man behind the scenes called himself a "humanity experimenter". He used me as a guinea pig to observe whether a person who lost his memory would become a devil or a saint in a desperate situation. It's a pity that he chose the wrong person. I was born with a "logical chessboard". Every lie must have cracks; every game must be deducible. From identifying the first actor, to instigating the entire team of survivors, to locating the experimental center under the desert island, I worked step by step to overturn the chess game. When I finally stood in front of the experimenter, he smiled and showed me a document - the "real young master" of the wealthy Song family had returned a long time ago, and my identity was that of a "fake young master" who was supposed to die on a desert island. Real and fake young master, who is the chess piece and who is the chess player? Perhaps from the moment we left the desert island, another more dangerous experiment had just begun.