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.

While back in Minnesota to fill in as coach for a high-school hockey team, MacGyver tries to change the attitude of a callous player who has a shot at playing for the pros. But when this kid's ambition lands another player in the hospital, MacGyver must try and find out what or who is pushing him so hard to succeed.

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.

Mac and Jack return from a flight to find an abandoned baby in Jack's hangar, complete with a desperate note from the mother and his own endowment fund hidden in his diapers.