As Jim Miller's death at the hands of a terrorist adds to the campaign's problems, President Francis Underwood makes an unscheduled – and controversial – appearance in Congress. Over the objections of Republicans who want to investigate him, Francis forces his way onto the House floor to demand a declaration of war on the Islamic Caliphate Organization and authorization to do whatever is necessary to apprehend Miller's killer, Joshua Masterson. As the stunt sparks debate at home and abroad, Francis and Claire head to Knoxville for Miller's funeral. But when they try consoling the grieving family, Melissa Miller accuses Francis of being responsible for her father's death. While Francis works to get Congress to approve his declaration, Claire makes his case in a televised interview alongside Washington Herald investigative reporter Tom Hammerschmidt. Once Francis launches a campaign to convince the nation of the terrorist threat at home, New York Gov. Will Conway and his running mate Gen. Ted Brockhart must scramble to return attention to his misdeeds – a task made more difficult when Hannah Conway defends Masterson's mother Roseanne following a wave of harsh attacks. While Claire barges in on an FBI interview to request that Roseanne get her son to turn himself in, Francis asks Secretary of State Catherine Durant to carry out a lockdown of the borders. But as Conway seeks allies in Congress to make the case against the president and Claire tries to be the public face of her husband's efforts, it's clear that the country is deeply divided over the prospect of war. Amid a firestorm around the effort to capture Masterson, Francis arrives at the secret detention facility where he's been held all along. Unable to get Masterson to confess, Francis orders Assistant Director of Counterterrorism Nathan Green to kill him and then release footage that makes it look like he died while resisting arrest. Finally, as Congress prepares to use the debate over the declaration to question Francis' colleagues including Remy Danton and Jackie Sharp, Catherine Miller's refusal to politicize her husband's death prompts the Underwoods to temper their campaign of fear.