While Magnum works on a case of computer espionage, the president of the company asks him to also investigate his wife, who he believes is having an affair. After Magnum begins his investigation, his loyalties are tested when he sees that she is indeed having an affair... with Rick!

Robin asks Magnum to fly to Sicily to rescue a beautiful young woman who is in the clutches of dangerous mobsters. The woman develops an immediate crush of Magnum, which puts his new relationship in jeopardy. Later, when the mobsters turn up on the island, trouble kicks into high gear.