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.

A disgraced, 75-year-old ex-sheriff, whose life ends at the hands of corrupt cops, is brought back to life and given a second chance by a pair of young tech scientists, as a 35-year-old with unpredictable near-superhuman abilities.

CIA officer Carrie Mathison is tops in her field despite being bipolar, which makes her volatile and unpredictable. With the help of her long-time mentor Saul Berenson, Carrie fearlessly risks everything, including her personal well-being and even sanity, at every turn.