In an off-limits computer lab near Chicago, a mole infiltrates and steals a sophisticated piece of government security software. The implications are devastating—but it's only half the prize. In Indonesia, an American engineer is seduced into spilling secrets about a cutting edge Artificial Intelligence chip. The information seems harmless, but will wreak havoc the wrong hands. In the White House, discontent with the President is rising—but could it amount to treason? As the network of theft and deception grows ever more tangled, a sinister plot is taking shape. President Jack Ryan finds himself in his darkest straits yet, with US communications compromised and a Russian leader who has gone dangerously over the edge...