This one starts harmless enough, Macgyver travels to his old college where he is to judge the annual physics "barricade" contest. He meets up with some of the contestants including David who is under immense pressure from his father, the physics professor, to do better in school and win the contest.
Quickly we find winning the contest is everything to David. He has been working on the project for months and has resorted to drinking and drugs to help cope with the pressure. His girlfriend, Janice, lets Macgyver know he needs help but his father will not heed the warnings...and is a believer that "pressure turns coal into diamonds".
Unfortunately for David, all his work is in vain as another student cheats and gains a huge advantage on him. The loss brings David into a further mess and leads to a final scene where the whole campus and neighborhood are threatened by a bomb he made. The episode does get a bit preachy, hammering the themes of "being there for your kids when you need them." A minor annoyance, and it's still clearly the second best season 3 episode after Widowmaker.