In the first of several episodes throughout the series' run that portrays ordinary Americans and how they interact with and ultimately affect the W.H., an Ohio middle school social studies teacher, a widower who has recently filled the brief remaining term of his late wife in the House, joins two other reps to meet with Toby and Mandy about changes to unfair rules in the U.S. Census written into the latest federal budget. The other two, career politicians, are completely resistant to the changes, but Mr. Willis is swayed by a potent argument Toby makes regarding "strict constructionism" (generally conservative and libertarian belief that the U.S. Constitution is not a living document, and must be followed as written, unless officially amended through standard 38-state ratification) and the 14th Amendment. Toby is impressed with the man and his open-mindedness. Elsewhere, Sam tutors C.J. on the finer points of the census. Late in the episode, the staff meets for a late-night poker party.

The President meets Zoey's new bodyguard on a 20-hour trip to California; Josh tries to keep a fund raiser from being canceled; Leo needs the VP to break a 50-50 tie in the Senate.

The morning after Mendoza's confirmation, various staff members are brought back to earth by difficult meetings.

A stealth fighter is shot down over Iraq, leading to Bartlet ordering a military rescue as Toby worries about his brother trapped on a space shuttle orbiting the Earth. CJ deals with the ramifications of misleading the press about the rescue as the staff prepares for a town hall meeting that night. The town hall meeting goes well until the President leaves...and shots ring out.

The President is rushed to hospital following a shooting; staffers field questions on protection measures and executive authority. Flashbacks show how key staff members joined the Bartlet campaign.

A suspect in the presidential shooting is caught; staffers anxiously await news on Bartlet and Josh's injuries; flashbacks show how C.J. and Donna joined Bartlet's campaign.

The West Wing goes under lock down as a suspected terrorist is found to be working at the White House. Stuck with a group of high school students who were visiting the White House, the staffers, President Bartlet, and the First Lady all debate the issues regarding terrorism. Meanwhile, Leo sits in on the questioning of the terrorist suspect and learns a lesson about our perceptions of terrorists.

A meeting with the new Russian president becomes politically dangerous when surveillance photos show Russia building a nuclear reactor in Iran. C.J. is assigned Secret Service protection after receiving death threats.

Bartlet, Leo, Sam, Toby, and C.J. travel to New York City for a Catholic fund raiser at a long Broadway play called "The War of the Roses". Josh steps up his efforts to beat his girlfriend, Amy, in their struggle over the welfare reform bill, which leads to her forced resignation. C.J. and Secret Service agent Simon Donavon have grown closer, but a tragic event cuts short their relationship. At the play, Bartlet comes face to face with Republican Presidential candidate Rob Ritchie and faces the decision of whether or not to assassinate the Qumari Defense Minister.

Trying to participate in a late-night staff poker game proves difficult as news arrives that an unmanned U.S. spy plane has crashed in a remote part of Russia, and Bartlet and Leo have to deal with an incensed Russian President Chagorin and convince him via phone to let the military go in and recover the plane; C.J. obsesses over the fact that on the exact moment of the spring equinox (today), you can stand an egg on end; Toby and Will have a card-flipping contest in the press room, during which someone from the street fires several bullets into the room; Debbie must "crash" the West Wing for the first time when the bullets fly; at the same time, Josh is interviewing associate counsel applicant Joe Quincy, and there's something about the well-qualified lawyer that bothers Josh, which he deduces during the lock down.

The assassination of Shareef threatens to become public, the president speaks at Zoe's graduation, and the unthinkable happens.

In the wake of his daughter's kidnapping, Bartlet must make a decision between being a father and being President.

With Bartlet back in the Oval Office, and back in his wife's bad books, the hunt for a Vice President begins.

When a bio-hazard alarm goes off in the White House, the staff are locked down where they are - forcing them to have conversations they would have otherwise avoided.

While Santos is wrapped up in choosing his new Vice President, Helen is overwhelmed by the issues facing the new First Family. Meanwhile, Vinick must find a new road now that the election is over.

Santos and his staff prepare for the inauguration as Bartlet and his team look back on their years in the White House.