1968. The Soviet Union brutally crushes the “Prague Spring” with more than 5,000 tanks and 200,000 combined Warsaw Pact forces with more in reserve and ready to join the fray. Nick Temple, a visiting lecturer at the University of Heidelberg, uncovers the sudden clandestine movement of Soviet sleeper cells in West Germany. The stage is set for a massive invasion of the West by the Red Army, with nothing more than a small team of CIA agents standing in their way.