Harm and Mac investigate the Osprey, a controversial Marine Corps helicopter/airplane, after one almost crashes with Congresswoman Bobbi Latham on board.

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.