International terrorists, relying on support from the criminal underground of the North Caucasus, are preparing a monstrous terrorist act using nuclear weapons. They face resistance from the head of an operational group, Colonel Nizhegorodtsev, nicknamed Vampire, fighters of the operational-combat division “Nemesis Sword,” and a former chief engineer of the “construction of the century” in which nuclear charges were used—accidentally drawn into this story, Monchegorsk. Radical measures and skillful operational work by professionals, combined with the courage and ingenuity of ordinary people, result in the thwarting of the criminals’ sinister plans.