France, June 1944. On the eve of D-Day, some American paratroopers fall behind enemy lines after their aircraft crashes while on a mission to destroy a radio tower in a small village near the beaches of Normandy. After reaching their target, the surviving paratroopers realise that, in addition to fighting the Nazi troops that patrol the village, they also must fight against something else.
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.