CTU discovers where Philip is hiding and Daniels orders an air strike in a desperate move to appease the Russians. Jack and Bill go after Josh alone before the bombers find their target.

Doyle takes Josh to meet Phillip in the hopes of retrieving the circuit board, but his conscience bothers him over the exchange.

Jack runs a desperate tactic to free the CTU hostages from their captors. He manages to intercept Cheng, who plans to deliver Josh to his grandfather in exchange for the circuit board. Jack is forced to allow Cheng to escape in order to save Josh's life.

Jack is held in custody at CTU, while Cheng prepares to launch a surprise attack.

Nadia approves an interrogation technique that might prove fatal to Audrey. Doyle covertly aids Jack in the hopes that he can save her from further mental trauma.

Jack sets up a meeting with Cheng, while Doyle tries to track him with CTU's help.

Cheng offers to exchange the nuclear component for Audrey's life. Jack gains Chloe's covert cooperation, but their plans are dashed when Morris stumbles on to the operation.

Wayne continues to risk his health as he takes a stand that will force cooperation from the Middle East.

Wayne risks his unstable health in order to fight Daniels for the presidency. Lennox and Karen call an uneasy truce in the face of the impending war.

Karen pushes Sandra to wake Wayne from his coma in hopes that he will put a stop to Daniels' war plan.

Jack learns a devastating piece of news about Audrey upon his return to CTU.

While Jack evades Russian security guards, Buchanan assigns a new agent, Mike Doyle, to raid the Russian consulate to capture Markov and rescue Jack.

Vice-President Daniels assumes office in the wake of Wayne's injury and makes plans to implement his extreme security agenda.

Lennox tries desperately to escape from Reed as Wayne makes final preparations for his joint speech with Assad.

Marilyn tells Jack the truth about his father's involvement in the day's conspiracy. Jack uses her in an attempt to get to Phillip.

Marilyn gives Jack a lead that will help him find Gredenko, but they hit a wall as Phillip takes steps to cover his tracks.

Jack tries to trace Morris's location, while Fayed uses harsh tactics to gain his cooperation.

Jack's family loyalties are put to the test as Graem reveals his full involvement in the terrorist activities.

Jack forces Graem to take him to McCarthy's office in the hopes of finding a lead to their father's whereabouts.

Wayne prepares to talk to the nation as L.A. deals with the fall-out from the nuclear blast.

Ray uses the component to bargain for his family’s freedom, but Ahmed only grants half his wish.

Assad uses clever tactics to manipulate Fayed’s agent into leading them to the place where Fayed may be hiding.

Jack tries to locate Assad in hopes of warning him about the impending air strike. Assad agrees to help Jack locate Fayed, but Jack worries that he’s forgotten how to do his job.

20 months have passed since the events of Day Five. For the past 11 weeks, the U.S. has been under siege by a series of terrorist bombings, with Muslim extremists as the prime suspects. L.A. joins the list of casualties when a bus is bombed in a suicide attack.