Following the deadly bomb explosion inside a D.C. metro station, President Kirkman declares war on Kunami. When the emir of that country sends his ambassador to negotiate, FBI Agent Hannah Wells learns the emir is hiding something that could have deadly consequences.
Season 2 Episode 17 of Designated Survivor was watched by 3,290,000 viewers, resulting in a 0.60 rating in the 18-49 demographic.
On the night of the State of the Union, an explosion claims the lives of the President and all members of the Cabinet except for Secretary of Housing and Urban Development Tom Kirkman, who had been named the Designated Survivor. Kirkman is immediately sworn in as President, unaware that the attack is only the beginning of what is to come.