Jack flies with Paul on the medic helicopter back to CTU.
Jack calls Audrey with the bad news about her husband and she becomes upset.
Heller updates the President about Marwan's plan and the potential for more attacks. President Keeler is worried about civil unrest, and he instructs Heller to secretly go over the options to enact martial law.
Heller and Audrey meet the chopper as it lands on the CTU grounds. Jack consoles Audrey, but he doesn't know whether Paul will survive. Michelle and Tony inform Jack that a name from the encrypted document was on the terrorist watch list.
As Paul is wheeled into surgery, Audrey tells him that she will be waiting for him when he gets out.
The name from the encrypted files is Joseph Fayed, a chemical engineering professor. Instead of arresting Fayed, Jack wants Dina Araz to go in undercover to get to Marwan.
Marwan meets Mitch Anderson, who's dressed in his Air Force uniform. Marwan promises him clearance and identification codes for a flight package.
An Air Force pilot is in a hotel room with his girlfriend. His wife calls his cell phone to tell him that masked gunmen have her and their children hostage. The girlfriend, who is in on the plot, pulls out a gun. She orders him to get dressed.
Jack enters the holding room and shows Dina the photo of Fayed. She says she doesn't know him. Jack offers Dina the chance to have a life with her son Behrooz in return for helping them get to Fayed. She agrees to take Jack as hostage to Fayed. Tactical teams are already in place near Fayed's house.
The Air Force pilot puts up a fight with the woman holding him captive. She says she doesn't know who is paying her. Anderson comes in and hands the girl a bag full of cash. She leaves. Anderson tells the pilot that they have a plane to catch.
Jack lays out the plan for the CTU team. Dina will tell Marwan that she took Jack captive, and CTU can track this. Michelle asks Curtis to interrogate the detainees from McLennan-Forster.
Tony accuses Edgar of not being focused. He lets Michelle know about Edgar's mother. Michelle asks about Chloe, and Tony says that Driscoll forced her to resign.
Michelle calls Chloe and asks her to come back. Chloe resists, but Michelle convinces her to do it because Jack is in a risky situation. Chloe agrees to help out only for the day.
Tony tries to get Jack to tell Audrey that he's about to go undercover in a potentially dangerous operation. Jack thinks she's been through enough already.
Dina refuses to cooperate until she sees her son. Jack says she will only have a minute with him and brings her to Behrooz.
Dina assures Behrooz that they will be together if she helps the agents find Marwan. Behrooz begs her not to do this.
Edgar is surprised to see Chloe brought back to CTU to assist him. He tells Michelle that he doesn't need the help, but Michelle insists that he has no choice.
Jack and Dina arrive at Fayed's house as CTU operatives conduct audio surveillance with mobile parabolics. Jack hands Dina his gun because they have to make it look convincing.
Dina knocks on Fayed's door and says that she has a hostage who Marwan will want. She tells Fayed that her husband was killed in an ambush, but that she and Jack escaped. Fayed nervously calls Marwan.
Chloe can't tap into Fayed and Marwan's phone conversation because the signal is scrambled. Marwan orders Fayed to bring them to him.
The Air Force pilot anxiously enters the base as the guards search his car. They don't see Anderson hiding inside the collapsed backseat. Anderson radios Marwan and then kills the pilot. Anderson takes the man's passcard and identification. He then snips the thumb off the body with a pair of pliers.
The CTU doctor explains to Audrey and Heller that he called in a neurosurgeon to remove a bullet lodged near Paul's spine. Audrey weeps, telling her father that she didn't realize how much she cared for Paul until now. Heller says that he has to leave because the President asked him to do something important.
Chloe tracks on satellite as Fayed drives Dina and Jack. When Fayed turns into a tunnel, the agents following drop back so that they are not spotted. This is too far for the parabolic to reach the car and they can't hear what's going on. Terrorists dressed as construction workers grab Jack and Dina from the car and hand Fayed a briefcase. He drives off. Jack and Dina are loaded into another van which goes out the opposite way.
CTU sees Fayed's car but they realize that Jack and Dina are not inside. Michelle orders the follow team to stop Fayed's car.
As the agents approach the car, Fayed sets off the bomb in the briefcase. CTU watches in horror over satellite.
Chloe pulls up satellite and Caltrans footage to identify the van exiting the tunnel.
Marwan accuses Dina of lying because the men who followed her were killed when Fayed martyred himself. Marwan asks her to prove her loyalty by killing Jack. He hands her a gun.
Dina aims at Jack's head. At the last second, she turns the gun on Marwan and pulls the trigger. The chamber clicks empty. "Just what I thought," Marwan says calmly. He orders his men to kill Dina and take Jack away.
Anderson enters the high security area of the Air Force base. He presses the pilot's severed thumb to the keypad for verification. The door opens and he goes into the airplane hangar.