A not-so-friendly bet between Robin Masters and ruthless magazine publisher Buzz Benoit could leave Magnum and Higgins on the street unless they can beat Benoit's team in a high-stakes softball game. Magnum thinks their chances of beating Benoit's beautiful magazine models is pretty high, until he learns that Buzz has brought in professionals to play.

A familiar voice on the radio leads Magnum to Holly Hudson, a popular Saigon disc jockey. Magnum discovers that Holly's been the recent victim of some very vocal death threats, but she's more concerned about the whereabouts of her missing fiance.