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 held for $300,000 ransom. Magnum, Rick and Higgins help in the rush to either raise the ransom money in time, or deduct 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...

As Rick's wedding looms ever closer, Thomas continues surveillance on Linda to catch the psychopathic killer who is stalking her; T.C. faces a reconciliation with his estranged wife; Thomas gets surprising news about his theory that Higgins is really Robin Masters, as well as the true fate of Lily.