Seven young FBI agents led by instructor Jack Harris () went to an island not far from the coast of California to receive special training code-named "Mindhunters". The main content of the training was simulated killers. The serial crime process and proceeded to investigate, analyze the killer’s psychological motives and possible next crime plan. However, from the first day of training, the seven young agents were surprised to find that they had been deeply involved in a carefully arranged murder puzzle. The active and passive relationship of the cat and mouse game had undergone a complete change, but The thing that made everyone break the most was that the serial killer was hiding in or around them, and he was well versed in the psychological weakness of each member, and he always made a quick move before they made effective judgments. Trapped in an isolated island, unable to ask for help from the outside world, or daring to trust anyone, they only have to learn now to sell, and use the psychoanalytic skills they just learned at the FBI to figure out the killer's next move.
There is a game in the game, a game in a game, a sniper training is instantly turned into a death game hunted by a killer. The mutual suspicion between companions provides the killer with many opportunities. When surviving on an isolated island, FBI agents seemed to rely on and trust only themselves
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