Harm and Mac stumble upon a miscarriage of justice in a 10-year-old case when they tutor a group of law students in a mock trial.

In the original case, an investigation team headed by Admiral Chegwidden concluded that a disgruntled gun captain caused an explosion that killed 29 sailors, including himself. But when the ""defense attorney,"" helped by Mac, and the ""prosecutor,"" helped by Harm, retry the case, a new witness and new evidence are uncovered, prompting Mac and Harm to request that the original hearing be re-evaluated.

Mac is assigned the personally distasteful task of representing a fellow Marine who is appealing his death sentence for the murder of three other Marines. She believes that the defendant, Kenneth Farmer, should receive the death penalty, but she must argue otherwise in court. Brumby, who doesn't believe in capital punishment, must argue in favor of it.

However, in attempting to overturn the original guilty verdict, Mac must argue inadequate counsel by the corporal's previous lawyer: then-Commander A.J. Chegwiggen. The appeals court lets stand the original guilty verdict, but orders a new sentencing hearing.

Mic is recalled by the Royal Australian Navy and must leave within 72 hours. As a result, Harm is assigned to replace Brumby at the new sentencing hearing. Despite Mac's arguments to the defense of Corporal Farmer that was not raised by then-Commander Chegwiggen, Corporal Farmer is again sentenced to death.

Admiral Chegwiggen throws a goodbye party for Mic at the local bar.

Trouble in the JAG office starts when Gunnery Sgt. Victor Galindez, ""Gunny,"" is charged with assault following an off-duty altercation outside a gay bar. It comes to light that P.O. Tiner was also involved in the brawl, having come to the aid of his companion, whom Gunny was roughing up.

Meanwhile, Mac finds herself wrestling with the ""don't ask, don't tell"" policy as attitudes toward Tiner change around the office under suspicions that he's gay.

Harm and Mac are assigned to investigate charges that American GIs shot and killed civilians during the Korean War. They board a plane for Korea, along with a veteran who claims to have participated in the shootings. Korean terrorists take over the plane and insist on punishing those responsible for the alleged war crime.

Harm and Chegwidden fight an attempt by a salvage hunter to excavate the remains of a submarine that disappeared in 1941, just before the attack of Pearl Harbor. Meanwhile, Bud takes on the heavy burden of trying to keep an obese petty officer from being discharged for failing to lose weight.

Harm and Mac face-off in court when a female seaman, charged with desertion, claims she left because her recruiter lied to her about what her duties would be. Meanwhile, Admiral Chegwidden takes the case of an old friend whose impressive career is threatened because of the side effects of Viagra.

Mac prosecutes a SEAL jumpmaster is charged with causing the drowning death of a trainee during a parachute mishap by being hung over and is defended by Bud, assisted by a new female Lieutenant who is very ambitious, wanting to be the first female JAG.

Bud & Lt. Singer discovers a safety file that is inadmissible in court that supports the prosecution's contention that the jumpmaster was impaired. The file mysteriously winds up in Mac's car and she thumbs through it. After conferring with Harm who tells her what she already knows, she burns the file. But during questioning court, Lt. Singer objects that Mac is basing her argument based on the file, which Bud reluctantly agrees. Mac is charged with prosecutorial misconduct, removed & replaced by Harm.

Having been chewed out by the Admiral, she takes some leave & heads to spend time with Mic in Australia, running into the Admiral & Dr. Walden who are taking their own weekend 'trip'.

Bud's underachieving brother is accused of making a mistake during a training exercise that nearly killed 15 Marines. But establishing his innocence proves to be a difficult task, thanks to the age-old tension between the Navy and the Marines.

Adm. Chegwidden frets over a speech he must give when he is to be given an award.

Mic Brumby returns unexpectantly to the States; Mac & everyone are stunned when he announces that he has resigned his Royal Australian Navy commission so that he could move to the USA and be by the "woman he loves."

While Harm is sent to Russia to help the Russians find a better way to implement their military justice procedures, Mac and Bud remain behind to prosecute a Naval commander charged with selling military secrets to the Russians. Once in Russia, Harm becomes involved in investigating high level corruption in the military.

Meanwhile, Mac is on the verge of making a deal with the traitorous Naval officer when he and his lawyer are murdered. Mac and Webb then discover that the traitor was linked to a Russian assassination plot. But Mac's attempts to alert Harm fail, and he is caught in an ambush with a Russian who reveals the life-changing secret to him.

When the captain of a U.S. Navy frigate rescues a young girl in Cuban waters and sets off the beginnings of an international incident, Harm and Bud's investigation leads them to Cuba and a meeting with Castro.

When two Naval aviators are killed in the crash of their newly upgraded F-14 jet, Harm uncovers improprieties with both the civilian contractor and the Navy liaison.

At Christmas time, while everyone else at JAG is enjoying the happy time of the season, Bud & Harriet are at little Sarah's gravesite unveiling her headstone that has just been placed. Bud vows that it just can't end like this and insists on finding out what happened. Bud & Harriet approach Mic to have him represent the Roberts in their case against Dr. Gettis. Mic warns Bud to stop, leading Bud to realize that Mic can't represent them, as his practice is representing Dr. Gettis. Harriet tries to talk Bud out of pursuing the case, but her pleas are ignored by Bud.

Mac is assigned the case by the Admiral despite Bud's plea to be the lead attorney. Even though he is ordered to stay away from the case, he nonetheless can't. Mac questions Dr. Gettis as to why he took so long to respond when Harriet labor was in trouble. Dr. Gettis claims that his pager battery had died & didn't realize he was needed until he heard the overhead page for him.

Harm's former partner Kate Pike is considering transferring back to the JAG office. It becomes complicated when a former CO of Kate is being considered as the new Inspector General and Kate confides to Harm that he made unwanted sexual advances to her when she worked for him.

Lt. Singer appears at the door during Kate's conversation and soon afterward, the affair is reported by the Washington media, although Harm suspects Lt. Singer as the source, she denies she overheard anything.

Eventually, Kate decides that Washington is just not the place to work and decides to turn down the Admiral's job offer.

Harm defends a Sergeant Major accused of the attempted murder of his wife. However, the Sgt. Major claims that he was concerned when his wife didn't come home, went out looking for her & was led to her location by the vision of a deceased chaplain from his old Vietnam unit. His defense attracts a representative of the Vatican which is considering the deceased chaplain for Sainthood.

Meanwhile, when Tiner hooks up a new screensaver that searches for extra-terrestial life on the Admiral's computer, it stirs excitement when it starts making weird noises.

Harm's friendship with Capt. Volkonov puts him in a precarious position when a Russian submarine blows up and the Russians claim that a U.S. submarine was responsible. It's up to Harm to convince his friend (& the world) that the accident was caused by a faulty new Russian torpedo, without divulging highly classified material.

Meanwhile, Mac is sent onboard the USS Watertown to observe when the Congressional committee headed by Rep. Latham investigates as to why women are not allowed to serve aboard submarines.

Renee & Mic are left behind wondering whether their really is something between Harm & Mac.

When Gunny goes to New Mexico to bring back a Korean War hero accused of desertion, he is ambushed by people trying to kill the man.

Harm and Mac travel to Bahrain to determine if a female Marine found aboard a terrorist boat that attacked a U.S. Naval destroyer was coerced into helping her captors or was a willing participant.

Sgt. Joan Steele, kidnapped by terrorists a month before the attack, insists that the cooperation she gave the terrorists was designed to foil their plot. Harm, who is defending her, finds her claim dubious. CIA Operative Clayton Webb asks for her help in tracking down a known terrorist who is planning to bomb another U.S. target within 48 hours, and Steele readily agrees. But then she suddenly disappears, confirming Harm's suspicions and, more importantly, leaving the target -- a busload of American children -- at risk.

Harm is stunned to learn that his former girlfriend, Lt. Cmdr. Jordan Parker has been found dead in her apartment, having been shot with her own gun.

Despite this evidence, Harm is unwilling to accept the premise that Jordan committed suicide & calls in Lt. Cmdr. Teresa Coulter to help examine the forensic evidence. Harm & Mac begin to look for possible suspects who would want to kill her, starting with her last boyfriend who had also been a patient of hers.

However, as each of the suspects are ruled out, they begin to look for other possibilities to explain her death. The investigation leads to a shocking discovery for Jordan's neighbor. Returning home, Harm is stunned to find a letter from Jordan in his mail. Jordan wrote & mailed it a few hours before she was killed; in which she tells Harm just how much she had valued their time together.

Harm & Mac square off in court over a charge of illegal fraternization, but when they oral arguments become directed at each other & reflecting their own relationship, Judge Helfman recesses the court for the day with a strong admonishment to the both of them.

All the staff shows up at Admiral Chegwidden's house for Mic & Mac's engagement party. Lt. Singer shows up in a knock-out of a dress which stuns the Admiral for a moment, not used to seeing her in civilian clothes.

Bud shows up dress properly for once, but Harriet notices after arriving that he has peanut butter on his tie. Bud is mortified trying to get a tie from anyone, without much luck. Later, he is forced to remove his jacket when wine gets spilled all over him. Even more mortified, Bud feels desperately out-dressed.

Throughout the evening, Mac reminisces with the Admiral about past events involving the both of them.

Mac becomes upset when Harm tells her at the last minute that he will not be attending her rehearsal duty in order to complete his 6-month required carrier landing qualifications. He assures her that he will be back in time for the wedding. At the church, Chloe is still wary of being friends of Mic. On board the USS Patrick Henry, Harm learns that the LSO who will be grading him thinks of him only as a "land-based Washington weenie." His fears that he won't be graded fairly are realized when he is ordered to land after his first attempt is waved off. After convincing the LSO that they were flying they way that the LSO taught them, he allows Harm to try again. After passing, he then completes his required night traps and requests to head back to Andrews AFB. With an approaching storm, all air operations are suspended, but is assured that he & Skates can be on the first Tomcat, once its forecasted to be safe. With a break in the storm, he & Skates are allowed to go.

Harm's chance of being rescued from the Atlantic Ocean hinges on Mac's psychic ability (first seen in Season Five's "Psychic Warrior"). However, Mac is trying to cope with her conflicting emotions for both Harm & Mic. On the edge of going unconscious from severe hypothermia, Harm's fires several warning shots which attracts the rescue helicopter. Back onboard the USS Patrick Henry, Harm's vital signs start to fade out, but Skates words help him pull through. Transferred to Bethesda Hospital, Renee learns that Harm has partial amnesia and doesn't remember them being a couple over the past year. Mac's indecision about the wedding drives Brumby back to Australia. When Harm tells Mac on the phone to come to his place so that she doesn't have to be alone, she arrives only to learn that Renee has beaten her to Harm's place with the news that her father has died. Mac ends up in the rain with no one around.

Unwilling to face her pain over Mic & Harm, Mac is granted temporary assignment on the carrier USS Guadalcanal (along with Gunny) when the staff JAG there disappears.

Harm returns to active duty after returning from Renee's father funeral.

**August 15 - 17, 2001**

After a break-in and murders at a Naval Annex building in Washington, D.C., Harm finds out that one of the victims was a friend of his, who is also suspected of passing information to the Chinese.

As Harm sets out to clear his friend of espionage charges, he encounters startling roadblocks put in the way of his investigation by the intelligence community.

Meanwhile, Renee shows up at JAG Headquarters with surprising news for Harm, and Mac tirelessly searches for the young girl she left behind in Indonesia. (See, ""Guilt"")