A jewel thief with diplomatic immunity kills Mac's friend. But there are more people involved in the crime - and Mac can't be sure who's on his side.

Mac and Nikki race to recover equipment from a downed experimental plane before the Soviets, who are using a psychic to guide them to the wreckage.

MacGyver is forced out of his grief over the tragic death of a friend by a madman with a score to settle from their past association.

MacGyver teams up with colleague Nikki Carpenter to find out who is behind the attempts on her life. When they find out that the man who tried to kill her is connected to two terrorists who blew up a local post office, MacGyver and Nikki must find out what the terrorist's next target is before it's too late.

While testing a new nuclear bomb defusing team at the Phoenix Foundation, a deadly explosion kills three men. Pete blames himself for not inspecting their equipment better and resigns from his job out of guilt. However, Pete is replaced by a not-so-trustworthy man—one who may have been connected to the explosion.

MacGyver becomes infatuated with a woman while conducting environmental-impact studies. However, what MacGyver does not know is that the woman was hired to "persuade" him to skip the studies—and if necessary, kill him.