A man in security guard uniform, carrying a briefcase, enters a hangar alone. There is a helicopter. The man enters the code that opens a storage room door. Inside the room, he steals a book that says "Stealth Helicopter Operating Manual - Top Secret" and a key-card that opens the helicopter. He replaces the fire extinguisher in the copter with one in his briefcase. Finally, he just flies away in the copter. Elsewhere, MacGyver meets his Jewish godson Jeffrey, who's bar mitzvah is going to be on the following day. Jeffrey's father isn't on the best of terms with his own father, but Jeffrey is convinced that his grandfather will attend the bar mitzvah. Jeffrey entrusts the picking up of his grandfather to MacGyver. Granpa tells MacGyver he has to pick up Jeffrey's present from the post office. He sees a man in a suit, wearing an earpiece, standing in guard outside the post office. He asks MacGyver to pick up the packet that is waiting there, addressed to an alias... There is a tracker inside the envelope, so the suits can see that it is moving. When MacGyver exits the post office, the suit pulls a gun on him... what is going on?

While researching his family's genealogy, MacGyver discovers that his family name was disgraced during the Middle Ages. He is then knocked unconscious and, not surprisingly, is transported through dreams to the time of King Arthur (a curious Pete look-alike!). Here he must confront some stubborn knights, convince Arthur that he is a friend, and set out in search of his forefathers.

After outwitting the evil Sir Duncan and escaping the clutches of Morgana, MacGyver and Merlin search for the kidnapped Cecilia. They not only free Cecilia and bring Morgana's wizardry to an end, but they find MacGyver's ancestor as well. Here, the first name of our protagonist is finally revealed...