CIA Analyst Charleston Tucker still can't remember what really happens a year ago when the diplomatic convoy she was on was attacked in Kabul. While she and then-Senator Payton barely made it out alive, Charlie's fiancé, Payton's son Aaron, wasn't so lucky. Today is the one-year anniversary of Aaron's death; Payton is president, Charlie is her CIA briefer and together they're faced with a choice - try and avenge Aaron's death by going after Fatah, the terrorist responsible for the convoy attack, or hold off in favor of taking down his entire network in the future.

A stranded Russian submarine contains stolen U.S. secrets. Charlie receives an incriminating picture. President Payton selects a new CIA director.

Charlie has flashbacks of her arrival at Midnight City where she first met Nick and witnessed him brutally interrogate Fatah. When members of the militant Islamist movement Boko Haram kidnap 21 Nigerian girls, President Payton tasks Charlie with the logistically impossible -- to find and save the girls without Nigeria knowing the U.S. was ever involved. Meanwhile, President Payton hosts the Chinese president at Camp David and realizes that she can use their trade talks to get something she really wants.

Charlie and Nick both receive a threatening text that sends Nick on an investigation to find the source once and for all. Charlie flashes back to her first interactions with Fatah on Midnight City. Meanwhile, President Payton's rival Senator Green reveals just enough about the upcoming senatorial convoy attack report to cause her to question Charlie's faithfulness. Charlie and team have to employ Jack Dawkins to contain a smallpox contamination in Panama while avoiding detection in the country. Kurt continues to pine for Maureen but an unexpected kindness distracts her from his attentions.

Now that a portion of the convoy attack report has been leaked, President Payton (Alfre Woodard) has a lot of questions for Nick Vera (guest star Chris L. McKenna). Unfortunately, he seems to be MIA. As Charlie (Katherine Heigl) searches for him, she flashes back to the hours before and during the convoy attack, and we learn another secret that she's been withholding from President Payton. After an American reporter (guest star Ray Laska) is granted a rare, exclusive interview, Charlie and team must work to contain the footage as an urgent matter of national security. Kurt (Cliff Chamberlain) finally works up the courage to show Maureen (Sheila Vand) his cards, while D.P. (David Harbour) reaches out to an old friend to squash the convoy attack report before it's released in its entirety.

Charlie and Maureen accompany President Payton to Qatar on a diplomatic trip. What begins as a standard mission of diplomacy becomes a disaster when a Qatar national infiltrates the American embassy claiming to be CIA. Constance tasks Charlie to find out if he's telling the truth. Meanwhile Lucas, Dash and Kurt work to track down Al Moosari, believed to be a direct link to Omar Fatah. Kurt has a run-in with a walk-in who claims to have found a valuable 'backdoor' into highly valuable communications. Nick, still MIA, is violently interrogated by a masked man. Charlie finally takes desperate and dangerous measures to remember the events of the convoy attack.

Sixty-five photos of national landmarks suddenly surface, all featuring the är rissãlah symbol. Meanwhile, a college student claiming to be an är rissãlah operative breaks into the White House. The 7th floor team works to figure out the identities of the picture takers as the hunt for Al Moosari continues. Charlie (Katherine Heigl), now in Yemen, desperately tries to make contact with her asset while evading the Yemeni secret police. Nick's (guest star Chris L. McKenna) masked captor lets him go only to lead him to his next mission. Back at Langley, Lucas (Adam Kaufman) takes the lead on the interrogation of a potential, and very controversial, är rissãlah member. At the same time, President Payton (Alfre Woodard) must make a hard choice between getting a much-needed win or holding out for her long-term goal of killing Sheikh Hakam.

After FARC (The Revolutionary Forces of Colombia) kidnap Jack Dawkins (guest star Derek Ray) from a Panamanian prison and hold him for ransom, the team has to pinpoint his location and extract him before time runs out. Charlie (Katherine Heigl) comes back to Langley to coordinate the Bellerophon op, while Maureen (Sheila Vand) struggles to fill her shoes as President Payton's (Alfre Woodard) briefer. Constance and Marshall (guest star Courtney B. Vance) fiercely debate whether or not to use Dawkins' potential rescue as a political win against her mudslinging opponent, Kyle Green (guest star Melinda McGraw). There are hundreds of thousands of är rissãlah photos now and the team is overwhelmed with the shear number of possible leads. To complicate matters further, the DC bomb squad removes a suspicious backpack marked with the är rissãlah symbol in front of the Washington Monument. Back in the Middle East, Nick (guest star Chris L. McKenna) and Al Moosari (guest star Nick Shakoour) are ...

A high-stakes investigation puts the focus on proving a sorority girl is in fact a member of a terrorist cell. Meanwhile, Charlie faces possible betrayal, and Nick Vera inches closer to contacting Omar Fattah.

Charlie (Katherine Heigl) and the PDB team race to find the Ar Rissalah 7's missing bombs before other members of the terrorist cell rise up and attack the homeland. In their hunt, Charlie must enlist the help of a former adversary, Professor Ahmad Ahmadi (guest star Anil Kumar). As domestic fear and suspicion builds, President Payton (Alfre Woodard) is under fire for her close ties to the CIA and faces a new political threat from Senator Burke (guest star Rex Linn). Meanwhile, Operation Bellerophon is jeopardized when Nick Vera (guest star Chris L. McKenna) and Omar Fatah (guest star Farshad Farahat) pick up a tail in the Philippines.

Charlie and Lucas help the FBI search for a terrorist who escaped custody in West Virginia.

Charlie and Payton must decide what they are willing to sacrifice in order to apprehend a terrorist.

Charlie quits the CIA to track down Omar Fatah; the seventh floor team vows to help Charlie.