Thomas arrives in Los Angeles to deliver lawsuit papers to a small film company on behalf of Robin Masters, and during the trip befriends a stand-up comedienne. But when he finds her murdered in his hotel room, he investigates to find who is behind the killing. When he goes to deliver the subpoena to the film company, he strikes up a relationship with the attractive young attorney, and the pair work together to find the murderers... Meanwhile back in Hawaii, one of the players on T.C.'s baseball team is mixed up with some small time car thieves, who witnesses his friends being shot dead after stealing a car...

Conclusion of this feature-length / two-part story. Magnum and Cynthia became ever closer to each other as they investigate Marti's murder. Their search leads them to a drug trafficker, but their snooping around sees them almost killed. Back in Hawaii, T.C., with help from Rick and Higgins, continues to search for the missing Kenny, and get him out of the trouble he is in...

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...