A Silicon Valley pioneer discovers that one of his own creations – a powerful A.I. – might spell global catastrophe, and teams up with a cybercrime agent to fight a villain unlike anything we’ve ever seen – one whose greatest weapon against us is ourselves.

The story of military hero Eric Carter’s return to the U.S. and the trouble that follows him back – compelling him to ask CTU for help in saving his life, and stopping what potentially could be one of the largest-scale terror attacks on American soil.