A bubbly young woman hires Magnum to find her father who, after being missing for over ten years, had sent her a postcard from Hawaii. But her father is involved in some rather shady business, and Magnum isn't the only one looking for him.

Magnum's services are once again called upon by Agatha Kimball after she has been contacted by a blackmailer claiming to have some important information about her granddaughter, Amy, but a botched money drop has Magnum thinking they're in far worse trouble than he's been led to believe.