T.C.'s children, Melody and Bryant, come to visit him in Hawaii, but at the airport Melody goes missing. It transpires that the young girl has been kidnapped and is being held for $300,000 ransom. Magnum, Rick, and Higgins help in the rush to either raise the ransom money in time, or deduce and find whoever snatched Melody. The kidnapping puts a strain on T.C.'s relationship with his son Bryant, as well as his ex-wife Tina, who quickly comes to Hawaii with her new boyfriend as soon as she hears of the kidnapping of her daughter.