"In the Shadow of Two Gunmen" is the two-part second season premiere of the American political drama television seriesThe West Wing. Both parts were written by Aaron Sorkin and directed by Thomas Schlamme.

It's Big Block of Cheese Day again. Toby meets with World Trade Organization protesters, and CJ meets with a group of cartographers who want the standards for maps changed to be a more accurate reflection of geographical and political reality. Donna asks Sam to look into granting a pardon for a friend's deceased grandfather. Bartlet is having problems selecting a site for his Presidential library.

The staff prepares for the worst as they make arrangements for the public announcement of the President's condition; Sam and Babish grill Abbey about her medical treatment of the President's MS; a crisis erupts in Haiti; Josh deals with two Democratic senators who won't support the administration's suit against tobacco companies; Mrs. Landingham buys her first new car, with tragic consequences.

On the day of Mrs. Landingham's funeral, the staff deals with a Haitian presidential crisis and the law suit against the big tobacco companies, and Bartlet must decide about running for reelection.

Bartlet's decision about Haiti falls under scrutiny; C.J. makes a horrible blunder in a press conference and is hounded about the president's health by reporters; the staff disagrees about whether Bartlet should apologize for not revealing his medical condition; Abbey is angry that Jed has decided to run for reelection.

The senior staff clash with the consultants who are to work on Bartlet's reelection campaign; C.J. is concerned that the press senses the Bartlets' marriage could be in trouble; Josh asks Leo to let him use his connection to postpone the FDA's drug announcement; the situation on Haiti comes to a head.

When Bartlet vetoes the "death tax", the staff must scramble to keep the veto from being overridden; Josh tries to smooth talk a promising governor who is considering running against the President; Charlie is urged to ask for immunity in his upcoming testimony.

When an American spy submarine suddenly goes silent in hostile North Korea, Bartlet must decide whether to inform the enemy or attempt a secret rescue operation; Abbey learns her past malpractice suits might compromise Bartlet's criminal investigation; Toby meets with a representative from an appropriations committee who wants to funnel money away from Congress's funding of avant-garde artists.

At Abbey's urging, Josh meets with a powerful women's caucus over the proposed language of a United Nations treaty banning prostitution.

On the day before the New Hampshire primary, Josh drafts Donna as his frontwoman to ensure that Bartlet wins the nation's first primary in the small town of Hartsfield's Landing; C.J. and Charlie play an ever-escalating game of practical jokes; Jed plays simultaneous chess games with Sam and Toby while he plays delicate diplomatic and military games with the Chinese government over Taiwan.

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.

Bartlet finally tells the staff the truth about the death of Shareef; Danny agrees to hold off on the story after five alleged terrorists go missing; Andy goes into labor after once again refusing Toby's marriage proposal; Zoey is kidnapped from a nightclub on the night of her college graduation.

When Bartlet learns that Zoey's kidnapping is the work of Qumari terrorists, he invokes the 25th amendment to diminish their leverage and eliminate any conflict of interest; since there's no Vice President, the power of the Presidency passes to Bartlet's chief political rival and the most powerful Republican in the country, the Speaker of the House, who immediately takes a very hard line; now that twins Huck and Molly have arrived, Toby wonders if he's capable of loving them enough.

As the search for Zoey continues, Walken takes a hard line against the kidnappers that could contribute to her death; Danny releases the Shareef story, and the revelation creates a rift that separates Jed from Abbey and Liz; tensions arise between Walken's staff and Bartlet's staff; the Democratic leadership in Congress assails Leo for allowing Jed to step aside; in retaliation for Shareef's death, a movie theater in Turkey is bombed, and eighty people, including American soldiers, are killed.

An unlikely party comes to the aid of the administration as it seeks to discover the party responsible for nuclear testing in the Indian Ocean; Will is unhappy, but his boss doesn't seem to mind, when a request to beef up the Vice President's issue profile results in Toby's handing him boring, low-level minutae; Josh dismisses a NASA proposal for a manned Mars mission until an agency staffer shows him the error of his ways; a conservative talk show host makes a pathetic attempt to bait C.J. into appearing on his show.

Hail the conquering hero. Josh returns after nailing down details for a trade agreement. But the devil in the detail, including information kept from Josh. C.J. fights megamedia ownership of local TV.

Margaret and Charlie prove to be invaluable allies as C.J. has a rough first day in her new position, made even more difficult by a Russian bearing radioactive gifts and a Defense Secretary's attempts to undermine her; Toby's less than stellar performance in the briefing room makes the search for a new press secretary a top priority, and Josh volunteers Donna to assist him in interviewing potential candidates; faced with a number of vulnerable seats in the upcoming election, Josh attempts to dissuade Matthew Santos from dropping out of another race for the House.

Former series regulars, including Marlee Matlin, Mary-Louise Parker, Tim Matheson, Anna Deavere Smith and Gary Cole, make guest appearances as Bartlet, Santos and their staff members attend a funeral for one of their own. Also, Josh cautions Santos about getting involved in the vote for Speaker of the House.

Former cast member Rob Lowe returns as a senior political official in this episode, which finds Bartlet and his staff making the transition as easy as possible for the president-elect, who discovers some unpleasant realities about his new job. Meanwhile, a stressed-out Josh realizes that he may need to take some time off after he reaches his breaking point.