Tom Kirkman, a low-level cabinet member, is suddenly appointed President of the United States after a catastrophic attack during the State of the Union kills everyone above him in the Presidential line of succession.
Now, one year into office, Kirkman is a Commander-in-Chief determined to rebuild the Capitol and capture the terrorists behind the catastrophic attack on the United States. When Ukrainian nationalists hijack a Russian Air flight, the president is faced with a hostage situation in which his diplomatic skills are put to the test.
Agent Wells finally closes in on Patrick Lloyd, but when the president decides to take action during the White House Correspondents Dinner, members of the Homeland Security Council threaten to derail their plans.
President Kirkman is faced with a viral pandemic. Agent Wells and MI6 Agent Damian Rennett discover evidence that could change the lives of members of the first family forever.
Tensions rise between America and Mexico when a Mexican citizen is shot during a border dispute. Kirkman and his staff must work quickly to resolve the situation and create a new trade deal.
Kirkman tries to win back the people's trust after a senator misrepresents a private conversation. MI-6 agent Damian Rennett joins FBI agent Hannah Wells to solve an international murder.
When a U.S. Navy ship containing secret surveillance becomes stranded in enemy waters, President Kirkman must negotiate the crew and ship’s release. If captured, the technology on board would create a massive threat to national security. Meanwhile. Chief of Staff Emily Rhodes reconnects with someone from her childhood.
When a Turkish activist ignites protests in the U.S., Turkey's president demands his extradition while the first family unknowingly finds themselves in the center of a battle that could threaten Leo's future.
While on a secret mission to Afghanistan, President Kirkman meets with two infamous warlords and must determine whom he can trust to hand over territories to the United States, while Seth has a run-in with Washington D.C. police that puts his job, reputation and future in the White House on the line.
After sorting through thousands of letters all requesting something of president, the White House staff are assigned three, with Emily, Seth, Aaron, Llyor and Kendra joining forces to get answers and possibly save a life. Meanwhile, Hannah and Damian continue to chase down leads to exonerate the first lady, but in the end, Hannah learns the truth may be closer than she thinks.
It's Christmas Day and President Kirkman is alerted to a group of religious extremists who refuse to evacuate when a forest fire threatens to engulf their cabin. Deploying Emily and Aaron to help diffuse the situation, Kirkman must act quickly to save multiple lives at stake. Meanwhile, the First Lady finally gives her testimony to the FBI director, while what happens next changes the lives of the Kirkman family forever.