Prequel

One year after Day 4, Jack and Chloe meet at a fenced-in scrap yard in Chicago, Illinois. Jack's hair is long and stubble has grown over his usually clean face. He is wearing a blue hooded sweatshirt, and makes sure the hood is up when he gets out of the car. As Chloe turns the corner where Jack is hiding, he grabs her and asks if she was followed. She assures him that she wasn't.  Chloe explains that three days ago, someone remotely hacked into her computer and saw that she had accessed Jack's autopsy report. Jack becomes frustrated and asks why she didn't erase all files related to him. Chloe insists she deleted the files but fears the hacker who infiltrated her hard drive would realize that Jack wasn't dead after learning she'd been accessing the autopsy report and was also in contact with an undercover operative in Chicago. Chloe urges Jack to leave town immediately to which he agrees.  As she walks back towards her car, Jack asks about his daughter, Kim. Chloe explains that Kim was heartbroken over Jack's supposed death, but is doing better now that a year has passed. Jack returns to his car and a motorcycle drives past him. Jack gets back in his car and watches suspiciously as the motorcyclist turns around. Jack and the motorcyclist each rev their engines. Jack checks his rear view mirror and puts his car in reverse.  The motorcyclist looks to his right, and suddenly a black car speeds out from another side street. Jack floors the gas and races backwards as the car chases him down. He turns around and attempts to lose the car in traffic. Jack pulls into another junk yard and the car follows. Jack speeds towards a forklift and jerks his car to the right at the last second. The black car also turns, but loses traction and slides into the blades of the forklift, which are midway off the ground, impaling the driver.  Jack drives back out of the scrap yard while the unknown man on the motorcycle continues to watch him.

7:00 a.m.-8:00 a.m.

Eighteen months after faking his death, Jack Bauer, who's assumed the name Frank Flynn, returns to Los Angeles after the four people who know he's alive come under attack. President Logan prepares to sign an important arms treaty with the President of Russia. First Lady Martha Logan is disturbed about the morning's events. Jack learns that he's being framed for the attacks.

8:00 a.m.-9:00 a.m.

Jack and Chloe infiltrate Wayne Palmer's penthouse at the hotel in hopes of finding a lead. Martha tries to convince her husband that she had a conversation with Palmer the night before. Cummings' ally — Nathanson — launches the next phase of his plan at the Ontario Airport.

9:00 a.m.-10:00 a.m.

Jack conceals himself in the airport hangar, surveying the Russian separatists and feeding information to Curtis and his assault team. The terrorists continue to execute hostages in an attempt to make President Logan give in to their demands to nullify the treaty. Martha discovers that all the traces of her conversation with David Palmer might not have been erased.

10:00 a.m.-11:00 a.m.

Jack is captured by the terrorists, who use Derek as leverage to force him to compromise CTU's assault team. Logan refuses to give in to the terrorists' demands. However, the airport incident turns out to be a diversionary cover for an arms deal. Martha continues to try convince her husband that the phone call was real, but Walt interferes. A new representative from Division arrives at CTU and begins to undermine Buchanan's authority.

11:00 a.m.-12:00 p.m.

Jack returns to CTU and has an emotional reunion with Audrey, while Curtis tracks the Russians and the stolen military-grade Sentox nerve gas. Cummings sends in an assassin to silence Jack. Chloe discovers that Spenser has an agenda at CTU. Walt convinces Logan to send Martha to be institutionalized when she tells them of the attacks against her.

12:00 p.m.-1:00 p.m.

Jack meets with Mike Novick in hopes of gathering evidence against Cummings. Martha begs Aaron for help while Walt thinks that he is forcing Logan into aiding him with his complicity with the terrorists. Buchanan butts heads with Lynn over a decision to violate the President's orders, while the Russian separatists attempt to escape with the nerve gas.

1:00 p.m.-2:00 p.m.

Jack learns of a man named Jacob Rossler, who has links to Erwich. Charles Logan, Mike Novick and Martha Logan discuss the best way to handle the Walt Cummings situation. Eriwch tries to get the canisters to open. Lynn has personal problems that draw him away from work and Chloe O'Brian fires Spencer.

2:00 p.m.-3:00 p.m.

Jack poses as Rossler, the programmer, and manages to trace one of the Sentox nerve gas canisters, but he goes against the President's orders when the terrorists target a shopping mall. President Logan and Martha argue when she learns that he intends to cover up the real reason for Walt Cummings's suicide.

3:00 p.m.-4:00 p.m.

Vladimir Bierko kills Ivan Erwich. Jack obtains a data chip from Nathanson, Cummings' middleman. Chloe finds the name Omicron Corporation on the chip. Lynn figures out that everyone at CTU is working behind his back and has Buchanan taken into custody. Logan decides to give Bierko the route to the Suvarovs' motorcade. Martha jumps in their car at the last moment.

4:00 p.m.-5:00 p.m.

Jack meets Christopher Henderson at Omicron and almost gets blown up. Audrey convinces Curtis to have Lynn held on the grounds that he is mentally unfit to run CTU. Bierko attacks the Suvarovs, but Aaron Pierce saves the day.

5:00 p.m.-6:00 p.m.

Jack Bauer interrogates Henderson's wife, Lynn tries to get his keycard back as terrorists plan to release the nerve gas in a hospital. Tony wakes up and asks about Michelle's fate. Meanwhile the First Lady tries to avoid the President.

6:00 p.m.-7:00 p.m.

Jack Bauer has to deal with his daughter's return, a former mentor who has information he needs, and a terrorist attack on CTU. Meanwhile, President Logan debates martial law with Vice President Hal Gardner.

7:00 p.m.-8:00 p.m.

Jack Bauer and the rest of CTU take action to protect the remaining isolated areas and plan escape tactics. Chloe wrestles with her grief over Edgar's death, while Tony contemplates revenge on Henderson. Martha bolsters Logan's judgment as he face faces political pressure from Hal Gardner.

8:00 p.m.-9:00 p.m.

CTU investigates a new lead on Bierko, but finds resistance from German intelligence officer Theo Stoller. Martha Logan is skeptical of the administration's move for a curfew. New Homeland Security officials attempt to change operating protocol involving Chloe O'Brian and Bill Buchanan. Meanwhile, Wayne Palmer has some information he has to get to Aaron Pierce that someone doesn't want getting out.

9:00 p.m.-10:00 p.m.

Jack is forced to interrogate Audrey when he learned that she might be connected to Bierko and the terrorists. Wayne Palmer and Aaron Pierce flee from armed men who have orders from Christopher Henderson to kill them. Vladimir Bierko and his men execute the next phase of attacks by targeting a gas company and releasing the Sentox gas throughout Los Angeles.

10:00 p.m.-11:00 p.m.

Jack teams up with Wayne Palmer to help David Palmer's source in the White House: Martha Logan's aide, Evelyn Martin. Hal Gardner has a run in with Wayne, and Jack suspects the Vice President might be behind the days events. Audrey Raines goes along with a plan to remove Bill Buchanan from power in order to keep Chloe O'Brian at CTU to assist Jack.

11:00 p.m.-12:00 a.m.

New discoveries regarding the day's horrific events keep Jack Bauer away from CTU, whose agenda Department of Homeland Security is ordered to reprioritize. Chloe O'Brian and Audrey Raines team together to assist with field operations and the investigation takes an unexpected turn.

12:00 a.m.-1:00 a.m.

Although President Charles Logan claims the country is no longer under attack, martial law is still enforced and CTU remains under intense pressure to find the remaining fugitives. Meanwhile, Jack Bauer, Audrey Raines and Secretary of Defense James Heller reunite for a pivotal meeting.

1:00 a.m.-2:00 a.m.

While Jack comes closer to obtaining the recording from Christopher Henderson, tensions at the President's retreat escalate as Martha grows suspicious of her husband. Meanwhile, Heller and Curtis help in the struggle against Henderson. A surprising new ally joins Buchanan and O'Brian as they continue to assist Jack, and a new antagonist is revealed.

2:00 a.m.-3:00 a.m.

Although Karen wishes to help Buchanan, he is still taken into CTU to maintain the cover while Chloe escapes. Meanwhile, Jack hijacks a plane in search for the recording that Henderson handed off. At the retreat, Martha grows increasingly unstable, causing further dispute between Logan and Mike. Graem continues to manipulate Logan into taking drastic measures.

3:00 a.m.-4:00 a.m.

With Graem's help, Logan decides to launch one final attempt to secure the recording that implicates him in the conspiracy surrounding the day's events. At CTU, several agents begin working with Jack, Chloe, and Buchanan. Tensions continue to rise in Logan's retreat as the President contemplates suicide. Meanwhile, Bierko is transported to another facility, and Miles attempts to further his career by making a key decision.

4:00 a.m.-5:00 a.m.

Jack, Chloe, Bill, and Karen realize that the recording was erased by Miles. However, CTU is soon forced to switch tracks and focus on a new threat: Bierko escaped, and he plans to seize another powerful weapon. With the new threat quickly approaching, Jack must use Christopher Henderson in a delicate sting operation. Meanwhile, the drama at the retreat turns deadly.

5:00 a.m.-6:00 a.m.

While Jack and Henderson secure a missile submarine seized by Bierko, Martha and Aaron form an alliance with Mike Novick. Meanwhile, Logan prepares to leave for Palmer's sendoff, which Jack exploits to his advantage after he settles his other personal vendetta against Henderson.

6:00 a.m.-7:00 a.m.

After Bierko and Henderson are killed, Mike, Aaron, Martha, and Jack conspire to kidnap President Logan as part of a plan to secure a confession about the original conspiracy behind the day's events. When Jack's gambit fails, Martha and Chloe initiate a back-up plan to incriminate the President. Meanwhile, Jack's plan to disappear again is put at risk when someone from his past re-enters the picture.