Russia is going through hard times: corruption, merging of criminal elements with the authorities, economic instability. Secret department: “Black Square”, working under the president of the country, receives a task of particular importance - to uncover a criminal group that has reached the upper echelons of power and eliminate the threat of removing the president. “Black Square” deals with the security of the president, and acts in those special cases when the law is powerless. A special agent receives a task and goes to the scene. There, in a recently opened oil base, a series of mysterious murders take place. For several nights now, the workers of the base have not slept, because they are scared - every morning they discover the corpses of the base guards, and a monstrous mask of horror is imprinted on their faces. Local residents say that the traces of a terrible monster that appears at night lead to one of the drilling wells left by oil workers after numerous searches for oil in that region.