Jim "Mac" Bonnick is back, and he takes Rick for a ride by "selling" him a luxury boat and three beautiful geishas. But some angry yakuza businessmen and the boat's actual owners aren't exactly pleased with the deal.

A reluctant Magnum is hired by Ms. Jones, the "Hall of Records" clerk who often aggravates him with excessive red tape, to help her find her husband, Ray, an expert computer programmer who has disappeared after completing work on a valuable new artificial intelligence formula.