Jason Bourne is in Moscow to attend the wedding of his old friend and fellow spymaster General Boris Karpov. But the General has an important message to deliver to Bourne – "a lifeline for the end of the world." Before Bourne can decipher this warning, Karpov's wedding ends in chaos. Bourne discovers that the Russian has betrayed the Kremlin to forewarn him of the crippling disaster about to engulf the world. Bourne has just four days to discover the nature of the catastrophe and put a stop to it.