Rick is organizing a surf-ski competition to be held at the King Kamehameha Club (much to the disapproval of co-committee member Higgins) when a Kahuna appears and places a "curse" on the club and all who use it.

Having once been hired by wealthy, blind Agatha Kimball to find her missing granddaughter, Amy, Magnum's services are once again called upon by his elderly friend after she has been contacted by a blackmailer claiming to have some important information about Amy.

Magnum tries to impress a beautiful 'fan' of Robin's by showing her the Robin Masters estate, only to learn that she is actually a top security expert hired by Robin to test the estate's security.

Mad Buck Gibson, an old friend of Robin Masters and a legend in his own time for his earthy novels and macho existence, arrives in Hawaii and it becomes Magnum's lot to protect the hell-raiser from himself.

When her wealthy American husband is kidnapped and held for an exorbitant ransom, a beautiful Japanese woman seeks Magnum's help.