Magnum is hired by a beautiful Chinese antiques dealer that he's making a play for, to protect a precious ancient vase, "the Soul of Soong", until it's buyer arrives in Hawaii to collect it. But unbeknown to him, the priceless ornament is wanted by a Tong gang from the girl's home country, and a deadly martial arts assassin who can kill in the blink of an eye is hot on the trail...