Karen hears from Buchanan that Chloe is leaving and that Jack stowed away on a diplomatic plane where a passenger has the recording. Miles comes in as she is on the phone. Karen orders him to handle the Buchanan house ambush in the situation room instead of her office.
Karen lets Buchanan know that he will be arrested as a suspect. She wants Chloe to contact her on a dry channel. Buchanan sends Chloe out and directs her to walk to a nearby hotel.
The Homeland Security team knocks on Buchanan's door. He stalls as much as possible and tells them he will only speak to Karen. Karen orders Buchanan be brought into CTU and that they set up a search for Chloe's car.
Miles has reservations about Karen's decision to not interrogate Buchanan on site. She is emphatic that she wants to do it herself.
Chloe enters the hotel and sets up her laptop at the lobby bar. She calls Karen and instructs her to look up the manifest of the flight that Jack is on. Karen puts the data on a shared file so that Chloe can access it.
Jack sits in the plane's cargo area. Chloe calls him and explains that Karen is secretly helping her. Jack asks her to get the air marshal's seat number and to cross examine the passenger list against Henderson.
Chloe gives Jack the air marshal's name and seat number.
Jack opens up the cargo door leading to the floor of the plane's galley. He climbs out unnoticed. Jack goes to the row where the air marshal is and sits down. He knocks the air marshal out with his elbow, then props a pillow under the man's head to give the appearance that he is asleep. Jack takes the air marshal's gun.
Chloe gives Jack the identity of their suspect on the plane. Hans Meyer is a German connected to Henderson through Omicron.
Jack approaches Meyer, pretending to be the air marshal. He asks him to identify his baggage because there is something suspicious. Meyer complies and follows Jack to the galley. Jack knocks him out and dumps him through the cargo door. He climbs in and shuts the door.
Martha asks the Secret Service agent outside her bedroom why she can't have her medication. He has been instructed not to give it to her.
Martha summons Novick to her room and demands her pills. She won't say why she needs them so badly, but she is visibly upset. Novick promises to try to help her.
Graham calls Logan, who says that Jack has not been found yet.
Novick warns the President that Martha is agitated and wants her medication. Logan is angry and refuses. "Is there something going on that I should know about?" Novick asks pointedly. He says that Martha would not tell him anything. Logan assures him that it has nothing to do with national security and is merely a personal matter. The couple has come to the conclusion that their marriage is over. Novick apologizes, and Logan allows him to give Martha her meds.
Jack wakes Meyer up. Meyer insists that he has not seen Henderson in months. Jack forces him to open up his luggage.
A man named Ross approaches Chloe in the bar. When she doesn't respond to his advances, he retreats. Chloe calls Airport Customs and asks to speak to someone in passenger clearing.
A flight attendant alerts the passengers to remain in their seats because they are expecting turbulence. She notices that someone is missing. Suddenly, the air marshal flops from his seat. An attendant notifies Cotter, the pilot, that the air marshal has been assaulted. Following procedure, Cotter tells his copilot to lock the cockpit door and prepare to reverse course.
The air marshal warns the flight attendant that the man who was next to him has taken his gun.
Novick brings Martha her pills. He wonders what she is hiding because he thinks both she and the President are covering something up. Martha claims that it is only marital problems.
As Jack goes through his luggage, Meyer maintains that he is innocent. Chloe thinks Jack has the wrong guy because Meyers was in Customs for the last three hours. Jack feels the plane turning and he realizes that they know he is on board. He tries to open the cargo door, but he's been sealed in.
The air marshal locks the cargo door and tells the flight attendant to signal the pilot. She is concerned that the passenger taken hostage could die, but the marshal is insistent.
The cargo air starts to depressurize. If they can't get back into the main cabin, Jack and Meyer will lose consciousness. Jack calls Chloe, who sees the security bulletin about the plane. She has Karen connect Jack to the pilot.
As Chloe waits for Karen, Ross from the bar comes over to hit on her again. She zaps him with a stun gun and Ross passes out. Karen connects Cotter to Jack's phone. Jack explains that he is a federal agent and needs pressure restored to cargo because it is a matter of national security. Cotter is skeptical of Jack's claims, and he turns to his copilot, Evans. Evans doesn't want to take a chance and advises Cotter not to obey. Cotter refuses Jack's request.
Jack opens up a panel, exposing cables. He takes a belt from the luggage and uses it to bend one of the cables. The plane lurches and the passengers react in horror.
Jack tells the pilot that he will responsible if anything happens to the plane. Cotter concedes to bring pressure back into the cargo area. He orders the flight attendant to open the cargo hatch door. Jack comes out and has the air marshal locked into the baggage area.
The passengers scream when they see Jack's gun. He wants Cotter to keep the plane in a holding pattern so that he can search it. The pilot is bound by law to land the plane as soon as possible.
Logan panics when he learns that Jack hijacked a diplomatic flight to look for the recording. He calls Graham, who instructs him to order the plane down.
Karen learns about Jack's plane being forced to land. She knows that the President will take over the plane as soon as it touches the ground and she urgently needs confirmation of that tape. Buchanan is brought into CTU in handcuffs. Karen tells Miles she will handle him.
Miles calls Novick because he is concerned about how Karen is dealing with Buchanan. Novick doesn't have time for him, and he thinks Karen's actions are probably necessary.
Miles notices that Karen has shut down the feed in the holding room. She tells Buchanan that will remain skeptical until she sees the evidence against the President. Karen briefs Buchanan about Jack's current situation.
Karen is interrupted by a call from Logan and Novick, who want an update on the diplomatic flight's hijack. Logan insists that Jack is a fugitive looking to escape. He wants him taken down, dead or alive. Novick is shocked by this. Karen apprehensively agrees to the order.
Buchanan thinks that Logan wants to stop Jack from finding the evidence. Yet Karen has no authority to prevent the plane from landing.
Novick questions the President's decision. Logan insists that Jack has been lying to them all day.
At the bar, Ross wakes up and Chloe stun guns him back out. She phones flight operations and asks why the copilot didn't board the plane. She learns that he was replaced at the last minute by Evans. Chloe looks up Evans's history and sees that he was a private pilot for Omicron.
Chloe calls Jack with the latest discovery. She patches him into the pilot and Jack explains that Evans is connected to a known terrorist. Cotter is shocked, but doesn't say anything out loud. He feigns a cramp in his leg and gets up from the seat. When Cotter makes a move to open the cockpit door, Evans knocks him out with a flashlight.
Jack breaks into the cockpit and slugs Evans. He trains his gun on him and demands the recording. Evans hands it over. Jack makes him get back in the driver's seat to land the plane. He calls Chloe and warns her that he will soon be on the ground.
A drugged-up Martha calls Logan from her bedroom. She knows he's a good man, but doesn't understand why he didn't come to her for advice. Logan counters that she has been close to a nervous breakdown for the last three years. He hangs up on her to take another call.
Graham knows that Jack has the recording and is controlling the plane. He picked up a call from Chloe to Karen. Graham orders the President to shoot down the plane. The only other option is for Logan to go to prison for treason and murder.