A woman hires Magnum to protect "Norman," a prized show horse who may be kidnapped.
A perky woman hires Magnum to protect 'Norman', who is facing kidnap unless she pays a ransom; but the case has some unexpected turns when Magnum finds that her uncle is an old Vietnam comrade who is against him being hired, and that Norman is none other than a prized race-horse.
- Tom Selleck as Thomas Sullivan Magnum IV
- John Hillerman as Jonathan Quayle Higgins III
- Roger E. Mosley as Theodore "T.C." Calvin
- Larry Manetti as Rick Wright