Palmer has had enough of Sherry's power plays and has a final showdown with her in the hotel ballroom. Nina knows that the Drazens have no leverage without Kim, so she calls Jack and tells him that Kim's body was found floating in the harbor. Jack is crushed by grief and then he flies into a rage. He rushes the Drazens and a bloody shoot-out ensues. Nina's cover is blown and she makes a final dash for safety, leaving a bloody trail behind her. Jack is able to apprehend her before she can escape, but he is stunned to learn that he didn't arrive soon enough.

The Drazens threaten to kill Kim unless Jack pays Palmer a visit. Jack complies and is able to save Palmer's life once again. Jack then agrees to trade his life for Kim's since the Drazens believe Palmer is dead.

The Drazens contact Mason and offer to trade Jack for Alexis. Mason is reluctant, but Palmer pressures him to go ahead with the deal.

Palmer is relieved when it seems that he has dominated in the California polls in spite of his crisis.

Kim lands in jail when the cops don't believe her story.

Jack and Mason investigate the area where the power was to be turned off. Nina tries to warn Jack about his family's disappearance, but Mason hampers her efforts.

Palmer and Sherry clash over the handling of the evidence against Carl.

Teri is struck with amnesia and must turn to an old friend for help.

Keith takes matters into his own hands when he arranges a secret meeting with Carl. Elizabeth realizes who Alexis really is and immediately comes forward. Jack and Mason question her and then convince her to aid in his capture. The safe house is attacked, but Teri and Kim manage to escape. They are then separated by an unforeseen accident.

Jack and Palmer finally meet face to face and learn of their connection through Operation Nightfall. They work together to track down those who are seeking revenge on them.

Jack is forced to leave his family when Green places him under arrest and holds him at CTU. Once there, Jack must explain his actions to District Director Ryan Chappelle.

Jack plays a deadly game of cat and mouse with Gaines that results in a final confrontation. CTU arrives on the scene and flies Jack and his family to safety.

Jack sneaks into the compound and rescues his family, but Gaines catches on to him and gives chase. Jack and his family are attacked by Gaines and his men, causing them to become separated.

Palmer begins to form a two-year-old connection between himself and Jack Bauer.

Teri manages to call CTU using a stolen cell phone. She and Jack have an emotional conversation, but her signal dies before the call can be traced.

Jack tries to explain his situation to Secret Service, but they are unwilling to release him. He manages to escape and hides out with a hostage while contacting CTU.

Nina and Tony discover the identity of the mole who is working for Gaines.

Jack is now under Gaines' control and is forced to sabotage operations at CTU. Nina becomes suspicious of Jack and gets in his way.

Jack and Teri are reunited at the hospital. Jack plans to question Janet when she wakes up, but he is interrupted when Gaines contacts him and begins forcing Jack to follow his orders.

Jack takes drastic action to gain the cooperation of the only man who knows how to save Kim, but Mason's interference threatens to ruin Jack's advantage.

Jack breaks out of a locked down CTU so he can follow a lead from the key card. George Mason puts pressure on Jamie and Nina to learn of Jack's whereabouts.

Jack learns the identity of the agent who may be working against him. He acquires Jamie's help to get evidence.

Jack's plans to find Kim are sidetracked when he gets a call from Walsh, who is being stalked by assassins connected with the Palmer hit. Jack comes to Walsh's rescue and Walsh gives him a key card containing valuable information.

It is California Presidential Primary Day in Los Angeles and the longest day of Federal Agent Jack Bauer's life is about to begin. Jack has just patched his family back together after a trying separation. Midnight finds Jack playing chess with his teenage daughter Kim. As she goes to bed, Jack gets a call from Nina Myers, his coworker at the Los Angeles Counter Terrorist Unit, telling him to come in for an emergency meeting. Jack has no choice but to report in, but he and his wife Teri learn that Kim has snuck out before he leaves.