In 1965, a young Russian soldier guns down a Salvation Army Band and escapes only to fall down dead and grow old. In France, in 1977, a young Russian soldier attacks men wearing uniforms. Then a Russian unit is attacking an empty home. After one of the soldiers dies, he also ages. Why are the Russians attacking old targets and then aging? Steed and company are trying to find answers.

The Russian soldiers attacking in France were just the first wave. Two ""K"" agents are the true key to the plan. One ""K"" assassin is killed while assassinating a retired General. Who is the target for the second ""K"" agent and how might this start World War III? Only Steed, Gambit and Purdey can save the world.