To save time, Jack wants to go to Felsted Security himself. Felsted is the company that handled the dinner where Audrey first spotted the man from the compound. Audrey insists that she go with him to make the ID.
Driscoll and her staff review their options with the breach on the nuclear power stations. Curtis believes that the first meltdown could go down within three hours.
Heller does not like the idea of Audrey leaving CTU, and he holds Jack responsible for her safety.
Paul stops Audrey, and she begs him to talk later. Paul warns Jack that Audrey is still his wife.
Marianne quizzes Sarah on Jack's whereabouts. She tells her that Jack and Audrey went to Felsted Security. Marianne looks up the location of Felsted on her computer.
Heller tells Paul that he knows about Audrey's relationship with Jack. Heller says that Audrey is allowed to do whatever she wants because she and Paul have been separated almost a year.
Sarah catches Marianne in the back area. Marianne claims she is rebooting a hub for Edgar. When Sarah leaves, Marianne secretly phones her contact named Powell and gives him Jack's location. He tells her to divert suspicion at CTU. She can't be identified as the leak when Jack and Audrey are killed.
Navi watches a news report about Heller's rescue. He tells Dina that the Override has taken control of all the nuclear power plants and that their plan is still on schedule. Navi says they will mourn Behrooz when this is all over.
Dina gets a phone call from Behrooz. He killed Tariq, and explains that Navi ordered the hit on him. Dina says that she will pick up Behrooz in a half hour at the train station. Dina accuses Navi of having his own son killed and she slaps him. He forcibly threatens her, saying that Behrooz will not get in the way of what has to be done. Navi instructs her to pick up Behrooz as she had planned.
As they are driving, Audrey informs Jack that she is filing for divorce from Paul.
Edgar tells Sarah that he thinks he has found a way to shut down some of the nuclear reactors which haven't been taken control by the Override device. He asks her to stay off a specific hub. Sarah was under the impression that he instructed Marianne to reboot that hub, so she confronts Marianne about the lie. Marianne apologizes, and claims that she was only covering up for making a personal phone call.
As Navi drives Dina to the train station, he gets a call from Marwan. Navi tells Marwan that Tariq killed Behrooz. Dina says that she will never forgive Navi for what he did.
Edgar uncovers a piece of the code to take down the Dobson Override device. He can prevent some of the plants from melting down. Yet a mistake might set off a chain reaction.
Curtis makes Edgar present the situation to Heller and Driscoll. Edgar says he is able to accomplish the task without making a mistake.
Behrooz calls Dina. She says that she hasn't told Navi, and she knows a safe place where they can hide.
Navi pulls over and gives Dina the keys. He gets in another car with a set of henchmen and says he will be there when she picks up Behrooz.
Driscoll stops into the clinic to see Maya, who is anxious. Maya begs her to stay, but Driscoll can't.
Heller learns that Richard did not reveal anything after the sensory deprivation technique. Richard tells his father that he hates him now. He is released.
Paul calls Audrey and apologizes for acting badly. He asks her to give him some time.
Dina picks up Behrooz. She sees an oncoming train and urges her son to get on it because Navi has followed them. Behrooz gets out of the car, confused. Suddenly, shots fire and Dina is hit in the arm. The windshield shatters. Behrooz climbs back into the car and drives from the passenger side. Navi and his men follow, but Behrooz eludes them in traffic.
Navi goes to see Marwan with news that Dina and Behrooz have betrayed them. He thinks Dina will need medical attention for the gunshot, and he asks permission to monitor local hospitals and the police. Marwan agrees hesitantly, but threatens that Navi will answer for this no matter what happens today.
As he arrives at Felsted Security, Jack gets a call from Marianne. She instructs him to send the name of the suspect to her system instead of Edgar's. Jack questions why Edgar didn't tell him that in the first place.
Driscoll sees on Maya's charts that she was given Haldol, which Maya is allergic to. The doctor attempts to revive Maya. Driscoll is terrified. Sarah comes in to tell her that Heller is looking for her. Driscoll dismisses her.
Jack and Audrey scan the surveillance footage from the dinner event. Audrey spots the man. Jack notices on Felsted's security camera that their guard is not at his post. Jack radios for the CTU agents that accompanied him. Then he sees their dead bodies on the monitor. Suddenly, the door blasts open and two men come in firing. Jack and Audrey get to the ground in time and Jack shoots the two men. As the tech lies wounded, he tells Jack that the main source for the footage is on Felsted's servers. Jack copies this to flash memory sticks. As they see more men coming toward them, Audrey suggests they call CTU. Jack knows that CTU must have been compromised because no one else knew where they were. He grabs the sticks, and he and Audrey make their way through the building. Jack grabs a gun from one of the bodies and gives it to Audrey for backup. Jack calls someone on his cell phone, and Audrey asks who it is. "The only person I can trust right now," Jack answers.
Heller briefs President Keeler on the situation. There are seventeen reactors that are still at large. Heller asks Curtis to get an update from Jack and Audrey.
Heller compassionately asks Driscoll about her daughter.
Jack and Audrey are cornered in the garage of the security building. He takes out some of the thugs, but they both run out of ammo. Suddenly, Tony Almeida appears and shoots the rest of the henchmen. He helps Jack and Audrey escape the building.
Heller and Driscoll watch as Edgar goes through the code to break the Override on the reactors. After he finishes, they wait to see what happens. One by one, the reactors are turned off. Of the seventeen, six are still immune to the kill sequence. Their shutdown codes have been completely corrupted by the Dobson device and the six will melt down. Heller demands that someone contact Jack because he needs to find the terrorists. The country is now facing a nuclear holocaust.