Hours after the attack on the Capitol, President Kirkman steps into his role as Commander-in-Chief in the midst of chaos and confusion. Facing dangerous new challenges and adversaries, Kirman struggles to hold a country together that is on the brink of falling apart.

Kirkman learns who is behind the attack and needs to grapple not only with the prospect of war, but brewing domestic troubles as well. Kirkman taps Emily to monitor the domestic situation, while Alex may be in for more than she bargains for when she seeks out help from Hookstraten.