In this season, when Judge Advocate General lawyer "Harm" Rabb travels to Russia, he receives shocking news-- he has a younger brother. Meanwhile, back in Washington, "Mac" MacKenzie becomes engaged and plans her wedding, until Harm boldly makes a confession, forcing her to question her decision. And, sadly, tragedy strikes Bud and Harriet, but then Admiral Chegwidden delivers news about Harm that shakes the entire JAG office.