With Wells still chasing leads one year after the capitol bombing, Kirkman turns his attention to an incident involving a hijacked plane that threatens to turn into an international crisis.
Kirkman and his staff must rush to prevent a catastrophe after Patrick Lloyd threatens an act of biological warfare.
Another crisis threatens Kirkman's presidency, this time in the form of a viral outbreak. Wells takes a dive into Patrick Lloyd's past.
A shooting at the border threatens to escalate into conflict between the US and Mexico. Wells looks into a startling connection between Patrick Lloyd and a member of Kirkman's family.
An unexpected betrayal leaves Kirkman scrambling to win back the public's support. Wells and Damian Rennett team up to investigate a murder.
Kirkman's abilities are put to the test when a national security threat arises after a Navy ship gets stuck in enemy waters, and the crew desperately tries to protect the sensitive information on board.
With Alex struggling to deal with her family being dragged into an official investigation, another complication arises when Leo gets embroiled in a legal battle.
A trip to war-torn Afghanistan leaves Kirkman unsure of which native warlord to put his trust in. Out of familial love, Seth makes a decision that could cost him his job.
The White House staff splits to personally deal with three different cases. Chuck uncovers a lead that hits too close to home for Wells. Kirkman faces a difficult choice between his responsibility as the president, and his role as a husband.
With Kirkman trying to reason with religious extremists whose lives are at risk, a tragic accident turns his and his family's lives upside down.
Reeling from Alex's death, Kirkman struggles to get back in the saddle, but a hostage situation in Cuba demands his full attention.
As Kirkman and his staff deal with a cyber hacking and an endangered space crew, they receive help from an unlikely source who reveals a vast conspiracy.
With a video of the confrontation between Kirkman and Alex's killer leaked, the White House staff scrambles to alter the public's current negative perception of the president. A past decision comes back to haunt Kirkman.
As a power outage hits Washington, the ensuing unrest brings Kirkman's attention to a capable VP candidate. Wells investigates the source of the outage.
As unexpected international complications and untimely leaks threaten to unmake a peace summit, Kirkman's discovery of the source of the leak leaves him seething.
With a new threat arising, the FBI races against the clock to locate a dirty bomb from devastating the US. Kirkman plans to retaliate as the bomb claims the life of a familiar face.
As the US descends on Kunami in retaliation for the bomb, Kirkman must come to grips with the reality of his decision. Wells discovers a plot that could endanger the US.
With Kirkman's grief and personal struggles laid bare to the public due to another leak, the vice president makes a pragmatic decision. An attorney called Ethan West looks into Kirkman's past.
With Kirkman's ability to stay in office brought into question, Ethan West grills the president's closest advisers to make a verdict. Kirkman and Wells clash after she disobeys his orders.
Ethan West nearly derails negotiations to rescue an American held overseas. The identity of the culprit behind the cyber attacks is finally revealed.
As Kirkman faces pressure to join either the Republicans or the Democrats, Kendra Daynes finds herself in a perilous position. Kirkman recruits Ethan West to look into Moss's dealings.
Kirkman faces mounting pressure as he faces criminal accusations just as the lives of two of his staffers hang in the balance. Wells makes a shocking discovery about Emily.