America's first woman president has resigned in disgrace. Using knowledge privy to presidents, Alice Naylor travels back one hundred fifty years to hit the reset button on history. She will attempt to redeem her legacy by securing world peace. Unfortunately she and the Secret Service lover accompanying her believe this requires the permanent division of the United States.

The country's best—and most brutal—counter-terrorist agent is sent after them. Joe Mauer teams with a colleague who has secretly loved him for years. The two know they face long odds in stopping this wily president now turned traitor.

During the fateful spring and summer of 1863 the four wage their own desperate campaign to determine the outcome of the Civil War. Lincoln and Lee become pawns in a deadly game as Naylor and Mauer try to checkmate each other with the greatest general of them all.