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.

After a Republican commentator trounces Sam on television, President Bartlett decides to hire her over the objections of the staff. Josh and Toby mediate a conference between U.S. drug companies and an African President whose country is dying of AIDS.

C.J. joins the President on a flight to Portland after a wisecrack about Notre Dame; Josh seeks to defeat an anti-gay marriage bill; Sam wants to rewrite an education speech; an oil tanker appears to be violating UN sanctions; Josh teases Donna over her dating record.

Sam meticulously prepares a speech for the President to give to the environmental lobby, but Toby wants to sneak in some criticism of their failure to condemn environmental terrorism. Leo tries to convince the President to support his pet project - a missile defense shield - despite its continued failure to produce results, and the fact that it likely contravenes an anti-ballistic missile treaty. Several countries including Great Britain have sent new ambassadors to Washington to be recognized by the White House. C.J. travels to New York on a delicate mission to ask for a political favor from a comedian.

Josh finalizes a $6B health care plan that has strong support from both parties in both houses and appears to be a slam dunk for passage, but 78-year-old Senator Howard Stackhouse pulls a last-minute surprise--he wants money added for autism research or he'll filibuster. Thinking it's just a bluff, Josh blows off the senator, who then filibusters for more than eight hours while the WW staff waits desperately to begin their weekend with the episode unfolding as staffers write e-mails to their family members describing the evening's action. Elsewhere, Sam tries to eliminate various costly government documents, for which he's taken to task by a very young intern.

President Bartlett talks to the White House Counsel about the concealment of his MS. An enraged Toby has CJ grill the West Wing staff to find a leaker. Josh and Donna spar over a financial bailout of Mexico.

The staff is hunkered down in the Bartlets' hometown of Manchester, N.H., where they work with political consultants Bruno, Doug and Connie on the president's official announcement that he'll be seeking a second term; meanwhile, they all lament various W.H. events of the previous four weeks, including a huge strategic mistake by Josh, a pivotal FDA announcement scheduled for the same day as the president's speech, an ongoing battle between then president and first lady, and a major press room gaffe by C.J.

While the W.H. is hosting a gala dinner for Nobel Prize winners, Leo and the president learn of a suicide bomb in an Israeli cafe that took the lives of two American students in Tel Aviv for a soccer match, and the staff attempts to manage the president's first veto, of a House bill eliminating the estate tax, and the threat of an override the same night. Sam and Toby first try to sway a contentious Dem. From Tennessee who wants a whole list of farming and ranching concessions in exchange for his vote and three proxies; after a pep talk from Leo, they devise a substitute plan that may prove even more effective, if it works. Josh takes the governor of Indiana into a private meeting to determine if the man plans to challenge Bartlet in Democratic primary. C.J. takes heat from a smarmy Dallas entertainment reporter who is in town for the Nobel dinner but winds up having to cover the veto and override vote, but after the reporter embarrasses her during a live stand-up, C.J. one ups the woman in front of the press corps. Later, Sam, Toby and Josh try to help the president decide what to say to the parents of the two murdered students.

After a fatal shooting in Texas, the president asks Hoynes to go down there and speak out for gun control, in spite of his history opposing it. Donna makes a gaffe in front of the Congressional committee. Leo argues with an old friend about the creation of an international war crimes tribunal.

CJ cannot control her outrage when the US agrees to an arms sale to Qumar, a country that brutally abuses women. Josh meets with Amy Gardner, a leading women's group lobbyist. The content of a Smithsonian exhibit draws protest from a veteran's group. Leo and the President discuss options when the possibility of a Mad Cow infection strikes the US beef industry.

Poet laureate Tabitha Fortis visits D.C. to attend a White House dinner in her honor, and Toby develops a bit of a crush on her, but he also must admonish the somewhat flighty beauty against publicly criticizing the president for his refusal to sign an international anti-land mine treaty; Donna discovers a website devoted to Josh, and he soon becomes sucked into the online chat about his activities and ego; speaking via remote to a local morning show in Philadelphia and unaware that the mike is on, Bartlet makes a stray comment impugning opponent Robert Richie's intelligence, for which the staff, particularly C.J., takes a lot of heat from Richie campaign and the press.

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.

Donna teaches Toby and Josh an important lesson as their trek homeward continues; Sam staffs the President in Josh's absence and welcomes an old friend home; Bartlet hires a secretary and C.J. finds a Big Brother for Anthony; the situation in Qumar continues to escalate; Bartlet gets spooked by a photo op as the Dow continues its dive; and a pipe bomb kills 44 students at a Midwest university swim meet.

C.J. takes a short trip to her home in Dayton to check on her father, who is suffering from Alzheimer's Disease, and to give a speech at her high school reunion; at the Dayton airport, she meets an old high school acquaintance and they have a quick fling.

The President, C.J. Cregg, Will Bailey, and others are returning from a long flight overseas. As Air Force One is about to land, the indicator light for the nose wheel fails to come on, prompting pilot Colonel Jessie Weiskopf to call off the landing, and notify the President of the possibility of terrorism. The White House Press Corps is on board, therefore CJ and Will must keep the story under wraps, due to it being a world market event. This becomes a challenge when a F-15 Eagle jet is sent to inspect the nose wheel on AFO. Meanwhile on the ground, Josh is working with Congressman Tom Landis (R-MD) on legislation to Clean-up Chesapeake Bay, which angers Congressional Democrats. Toby meets with Congressman Mark Richardson (D-NY) who has introduced legislation to reinstate the draft, furthermore Toby notifies the Congressman a soldier from his constituency was killed in action in Equatorial Kundu. Donna works with members of the 1st Airlift Squadron, 89th Airlift Wing to learn about "Angel Maintenance," in order to brief CJ, when she returns. Angel is the code word for the President's plane.

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

A North Korean pianist announces his intention to defect in the Oval Office. While the staff passionately debate his request they also fight to get the President's choice of Vice President nominated by a new and hostile Speaker of the House.

A nuclear device is tested in the Indian Ocean, but none of the known nuclear powers will claim responsibility, leading to the possibility of a terrorist group holding missile tests. Vice President Russell, heretofore dismissed by west wing staff as a joke, a four-term congressman alleged to be securely in the pocket of a large Colorado mining company, recalls a junket he'd taken early in his political career in which a drunken Israeli statesman confessed to secret missile tests. Russell visits the sit. room and puts the military and national security leaders at ease, leading the president and Leo to reassess the man's political gravitas. Bartlet then drags the Israeli p.m. to the White House, where they debate the power of the U.S. to dictate which states should have nuclear capabilities.

Hoynes and Russell are campaigning in New York, confident of their prospects in the California primary. Santos needs to do unexpectedly well in California in order to stay financially afloat; another third place finish will see his donors shift their money elsewhere, finishing his campaign. Santos's message of education and health care is overshadowed when California passes a law prohibiting drivers licenses for illegal immigrants. Despite the bill being widely supported by most voters, Matt cannot publicly endorse it as he's counting on the support of Latino voters, who expect him to denounce it.