Magnum decides to get a "real job" and takes on the challenge of being the house detective for a Waikiki hotel, but finds his boss all too Higgins-like and is tasked with apprehending an elusive thief before an upcoming jewelry convention to be held at the hotel.

After thirteen years away, Thomas returns to Tidewater, Virginia to attend the funeral of his grandfather Everett, and reopens a long-running family feud when he suspects his stepfather of stealing and selling a missing family heirloom; a letter from Abraham Lincoln.