It is Thomas’ birthday, and he is hired by expert card player Jeanie Lowry, nick-named ’Texas Lightning’ to act as her body-guard at a high stakes poker game on-board a luxurious yacht the coming night. Thomas is at first reluctant to take a body-guard job, but the large cash fee offered soon persuades him. But during the card game, Jeanie slips away and breaks into shady yacht owner Thompsons’ safe. The break in is discovered and Thompson is ready to kill both Thomas and her, but they manage to escape and wind up stranded on a small island. Magnum and Jeanie are presumed dead, but Higgins, T.C. and Rick refuse to believe it and set out to search for them – but Thompson looks set to find them first. Worse still, all along, Jeanie is far from being what she claims to be...