Former U.S. intelligence operative Kolya Petrov, struggling with the physical and psychological aftereffects of kidnapping and torture, is drawn back into the game when Dmitri, his childhood best friend, holds the key to stopping an attack by terrorists armed with a deadly nerve agent. Working with Dmitri, however, is complicated. While their friendship had been forged during their years in an abusive Russian boys' home, the two men's lives took very different paths. Dmitri had headed the North American branch of a Russian gang until Kolya, working undercover, put him in prison. Ten years later, Dmitri's cooperation is essential to finding the smuggler of the nerve agent, and he refuses to work with anyone but Kolya.

Kolya reluctantly agrees to undertake one more mission, but to succeed, he must come to terms with the past. Can he trust Dmitri not to take revenge for the betrayal of their friendship? Can he rely on his own judgment and abilities, despite a leg injury and ongoing PTSD, to survive an elaborate plot that threatens his life and that of his fiancee, as well as the lives of hundreds of innocent people?