The fight is on.

Despite his best efforts, the Sentinel and his team find themselves in the midst of constant fighting as the Second Civil War rages.

It's a horrible situation for everyone.

Death, despair, and depravity rear their ugly heads.

The Sentinel must find a way to end the conflict before the United States is open to invasion from an old - and very ruthless - adversary.

Can he do it, or will America sink into darkness?