Driscoll and Curtis argue about how to explain why Marianne breached CTU. To protect themselves Curtis suggests they omit certain details about his past relationship with her. In return, he will avoid telling Division that he warned Driscoll about hiring Marianne.
President Keeler grills Heller about Marianne, who is still unconscious from the threat on her life. Heller says that they have already started evacuating the area near the San Gabriel Island reactor because it is expected to meltdown within the hour.
Jack lets Driscoll know that Powell had made numerous calls to Marianne from his cell. He gives her a second number to trace, and Edgar conducts the search. It is a mobile account and it needs to ring four times to trace.
Navi goes to the home of a woman named Farrah looking for his wife. He barges in, thinking she is hiding Dina. Farrah's lover emerges from the bedroom, and she begs Navi not to tell her husband.
As she hides out in a hotel room, Dina's cell phone rings. She won't let Behrooz answer it, fearing that Navi is calling. Meanwhile, at CTU, Edgar traces the phone number from Powell's cell to a hotel in Chatsworth. Driscoll orders him to send the location to Jack's PDA.
Jack gets the address, and he grabs Tony to leave. Tony assumes he is through because the CTU backup is already there."I appreciate the sentiment, Jack, but you don't have to prop up my ego," Tony says. Faced with stopping a nuclear disaster, Jack tells Tony to get in the car.
Dina is feverish and holds a bloody towel to her gunshot wound. Behrooz apologizes for causing this, and says he will go to the hospital where Dina's brother Naseem works. Naseem doesn't know what the family was plotting to do.
Driscoll informs Heller that the San Gabriel reactor has already started to melt down. An engineer from the plant calls. His face is covered with radiation burns from the exposure. He explains that the radiation will soon spill into the atmosphere. It's too late for the people who have been exposed.
Television news reports about the reactor's meltdown. Edgar calls his mother, who lives near the plant. She is housebound and attached to an oxygen tank. He says he will send someone to pick her up.
Audrey offers to help out since CTU is low on manpower. She will coordinate the State Police and National Guard.
Jack and Tony pull up to the hotel, where other agents are waiting. CTU Agent Castle notes that Tony is not authorized to be in the field."I'm going through that door first," Jack says."I want him to back me up." Their suspects are a woman and a teenage boy, both of Middle Eastern descent.
Jack and the agents raid the room, as Dina draws a gun to her own temple. Jack grabs it before she can kill herself. Castle holds Dina down, pressing on her wound. Tony pulls him off. Castle is angry about Tony giving him orders, and Jack assures him that Tony did the right thing.
Jack sends Dina's fingerprints to Driscoll. Tony notices that her wound is a recent gunshot.
Behrooz goes to Lindauer Memorial Hospital to see his Uncle Naseem. He says that Dina needs pain medication to treat her back. Naseem goes into an office and dials Navi. He tells his brother-in-law that Behrooz came looking for medicine and is acting strange. Navi says that his son may be using drugs, and he asks Naseem to keep him there until he can come get him.
Edgar asks Audrey for help getting his mother out. She promises to try to get the National Guard to pick her up.
Tony has a medic give Dina pain medicine. Jack pulls up Dina and Navi's records on a laptop. They have no criminal records and are not on any terrorist watch lists.
Driscoll plays for Jack a traced cell phone conversation between Dina and Behrooz about his father wanting him dead. Jack hears Behrooz plea to his mother for help. Jack knows that this is his leverage to get Dina to talk.
When Dina is resistant to interrogation, Jack says that he is aware that she protected Behrooz from his father. Dina is surprised and unnerved that he knows this. Jack says that Behrooz will be killed by his father. If she helps them find the Override device, Jack promises to get Behrooz a pardon from the President so that he won't have to go to prison. However, the offers expires the second another reactor melts down. Dina says she will help them once she sees this document.
Jack tries to convince President Keeler to grant clemency to a terrorist because they are running out of time. Keeler reluctantly agrees. He hangs up with Jack and tells his aide to make sure the document is non-binding.
Audrey lets Edgar know that she was unsuccessful in helping his mother. He is furious.
Edgar uses connections to get through to his mother's phone, and he tells her that he could not arrange someone to pick her up. She wants to commit suicide so that she doesn't have to endure the radiation poisoning. She tells Edgar that she loves him and hangs up.
Edgar gets up to leave CTU. Driscoll stops him, convincing Edgar that his mother would want him to save thousands of other lives.
Jack brings Dina a faxed pardon from the President. She says that Behrooz is at Lindauer Memorial Hospital, and Jack has her call her son. Dina tells Behrooz that she is with government agents and that she made a deal to save him from being arrested. Behrooz is suspicious, but Dina says she will go with the agents to pick him up in order to prove that this is true.
Behrooz tells his uncle that he has to leave. Naseem says that he called Navi, who wanted him to stay there. Behrooz tells Naseem that the whole family was behind the terrorist plot. Naseem doesn't believe him. When he hears that his father is coming, Behrooz runs out.
As he is fleeing the hospital, Behrooz runs right into Navi. Naseem comes up behind Behrooz, but Navi shoots Naseem dead. Navi grabs his son and drags him into the stairwell."You broke my heart," Navi sighs as he presses a gun to his son's forehead. Behrooz says that Dina will tell the police everything if he is killed. He urges Navi to look outside to see the police who are coming to pick him up.
Jack and Tony pull up to the hospital and see officers running into the entrance. Jack goes in and hears from a guard that there was a shooting. A Middle Eastern man fled with a teenage hostage. Jack calls Tony and tells him to meet him in the parking garage because they are now chasing Navi. Dina is worried.
Navi takes Behrooz into the parking garage. Behrooz tells his father that he's always hated him. Navi throws him into a car and drives.
Tony pulls into the garage as Jack comes down the stairwell into the same lot. Jack sees Navi driving toward him and he fires at the car's tires. Navi smashes into Jack, who crashes onto the windshield. Jack rolls off and keeps firing at the car, popping one of its tires.
Navi gets out of the car with Behrooz at gunpoint. Jack doesn't want to shoot Behrooz and he can't get Navi to give up the boy. Tony arrives, and Dina sees her son. Behrooz yells for her, but Navi takes him into a door. Jack has CTU find out what's in the basement where Navi is headed.
Audrey briefs her father that the main evacuation route from the reactor is at a standstill. The weather report shows an on-shore wind will sweep the nuclear cloud over all the people that are trying to evacuate.
Jack gets the schematics for the basement. Dina says that all the reactors will go off within two hours and that Navi will kill Behrooz anyway. She was only helping them to save her son, but she is happy that the reactors will melt down.