At the train yard, Jack backs away from Chappelle's dead body as masked men from the black van approach. The men check the body for trackers and warn Jack against following them. They take Chappelle and drive away.
Jack calls Wayne Palmer and gives him the news. The President is adamant about not giving in to any more of Saunders's demands. Wayne warns him of the impending virus threat. Palmer asks him to convene his cabinet.
Based on the money trail, Kim, Chloe and Adam discover that Saunders has a daughter in Santa Barbara. Jack calls Tony to let him know about Chappelle. Tony tells him that they are going to pick up Saunders's daughter, but Jack thinks that they shouldn't send up any signals to the terrorist. He suggests they substitute Jane Saunders with another look-alike agent so that Saunders isn't alarmed. Tony attempts to find an agent that resembles the girl.
Tony checks in with Michelle, but she doesn't yet know if she's infected with the virus. She wants to keep busy and asks Tony to give her some work.
Adam lets Tony know that they are tracking Cole, the man who escaped from the hotel. Chase is already on his way to the man's house.
Palmer contacts Jack and asks what Saunders meant about future demands. Jack believes that Saunders will continue to release the virus.
Chloe is unable to find a female field agent in Los Angeles that looks like the young Jane Saunders. Kim is the closest match.
Tony briefs Kim on the situation with Jane and how she is the only one who can stand in for the girl. Tony will not order her to do it. Kim, however, agrees to the mission.
Kim asks Chloe to take over her work while she goes to Santa Barbara. Chloe is angry that Kim is being sent out in the field.
Through a gas mask, Chase grills Cole's wife about his appearance because he is in danger of contracting a virus from the Chandler Plaza Hotel. She becomes angry when she realizes that her husband was having an affair. One of the agents finds a bloody tissue in the bathroom, which means that Cole is symptomatic of the virus.
With a soaked tissue at his nose, Cole touches items at a drug store. The pharmacist suggests that he go to the emergency room. Cole bumps into another customer on his way out.
When Jack enters CTU, Tony tells him that Kim is the only match for Jane Saunders. Jack refuses to let his daughter go out into the field, but Tony says that she reports to him.
Jack goes into the conference room where Kim is being briefed. He orders her not to go and explains that he put her inside CTU so that she would be safe. Kim says that she is at CTU because she wanted to be there, and it is her decision to accept this mission. Jack has no choice but to let her.
Jack escorts Kim out onto the helicopter pad on the roof. He gives her some last minute advice and hands her a gun. They board the chopper together.
Palmer speaks to his Cabinet via video monitors and informs them that some of the virus has already been released at the Chandler Hotel. They gave in to Saunders's demand of killing one of their own agents. Palmer asks the agency heads to open up their files to CTU in Los Angeles.
Tony tells his stunned staff that Chappelle was killed in the line of duty. He will be assuming his responsibilities.
Chase notifies CTU that he has Cole's wife contained. Chase is angry that Kim is being sent out into the field. Tony says that even though it is his call and Jack signed off on it, Kim is the one who accepted the assignment.
Aboard the helicopter, Jack apologizes to Kim for yelling at her. He also warns her that he is in command of any agent in the field.
Cole enters the E.R. and sees a news report about an infection at the Chandler Hotel. Cole alerts the nurse, and she recognizes him as the man they are supposed to isolate.
Saunders gets verification that the body picked up is Chappelle's. Saunders has his henchmen keep his daughter Jane in their sights. Jane Saunders, meanwhile, gets in her car and heads to work.
The cabinet members are concerned that the death of a high-ranking member of the intelligence committee was ordered by the President. Palmer answers that he was more concerned with buying time to save millions of lives rather than worried about his own re-election.
Palmer is interrupted by a call from Saunders, who wants to rectify America's atrocities by dismantling military operations around the world. Saunders demands that the government send him a list of all foreign nationals working covertly as spies across the globe. If he doesn't receive the list within one hour, Saunders will release two more vials of the virus.
Jack and Kim land in Santa Barbara and are met by Agent Forrester, who has already set up a staging area at the library where Jane Saunders works.
Chase gets word that Cole was found in an urgent care center nearby. He heads there.
As they drive toward the library, techs work on Kim to make her look more like Jane. Jack preps Kim about keeping her head down so that no one looks her in the eye.
Tony listens in as Chase questions Cole, who can not remember how many people he came into contact with at the pharmacy.
Jack watches over surveillance cameras as Jane works the reference desk at the campus library of the University of California at Santa Barbara. One of the agents purposefully spills a drink on Jane's pants, which makes Jane go to the restroom to clean up. Jack sees a man in a red shirt track Jane's movements, and he orders the other agents to follow him. In the restroom, another agent chloroforms Jane and she passes out. Kim exits a stall and puts on Jane's clothes. She emerges from the restroom. Jack tells Kim through her earwig that the man in the red shirt is one of Saunders's men. She turns away from the man.
Tony maps out all the potential places where Cole stopped and came into contact with people. A few of the customers at the pharmacy are not identified, and a number of patients in the E.R. left before quarantine was placed on the urgent care facility. There could be up to 75 people infected, with two full neighborhoods suspect.
Jack goes in to the room where Jane Saunders is being held. She awakens, and Jack asks for her help getting in touch with her father. Jane refuses, claiming she doesn't know how to contact Saunders. Jack threatens to go "as far as he needs to go"to get answers. Jane cries out for help.
Forrester interrupts to tell Jack that the man in the red shirt is approaching Kim. Jack radios Kim to warn her. The field agents send a librarian to distract the man in the red shirt. Kim walks away to another bookshelf and waits.
Forrester loses sight of Kim on the camera. A young guy approaches Kim for assistance finding a book. He pulls out a gun and threatens to kill her if she doesn't tell him where Jane Saunders is. The guy drags Kim out of the library.
With Kim out of sight, Jack runs towards the library. Kim knocks the guy's gun down, and Jack sees them struggling. Kim pulls out her own weapon and shoots the guy. "Saunders is going to know we have his daughter,"Kim says to Jack.