 Nicolai Dalchimski, a mad KGB agent steals a notebook full of names of "sleeping" undercover KGB agents sent to the U.S. in the 1950 s. These agents got their assignments under hypnosis, so they can t remember their missions until they re told a line of a Robert Frost poem. Dalchimski flees to the U.S. and starts phoning these agents who perform sabotage acts against military targets. Since the Soviets can t disclose the crisis to the U.S. government, they send Colonel Borzov, a military intelligence officer, to find and eliminate Dalchimsky before his actions trigger a war.