In 1985, Sergei Gregoriev, a Soviet colonel, wants to force his nation to reform, so he leaks secret information to the West. He picks an unlikely contact, a Pierre Froment, French nebbish in the diplomatic corps. Gregoriev keeps a lot of balls in the air - a marriage, a teen son he's trying to bond with, a mistress who's a colleague at work; his tradecraft is equally reckless. Meanwhile, Froment keeps his spy work secret from his Russian wife, and Mitterrand uses Gregoriev's information to make France indispensable to Reagan and his government. When Gregoriev leaks a list of key Soviet moles and spies, Gorbachev is left without secret intelligence. Will Gregoriev get what he wants?