Magnum is hired by a beautiful Chinese antiques dealer to protect an ancient vase known as The Soul of Soong until its buyer arrives in Hawaii to collect it. What he doesn't know is that the vase is also wanted by a Tong gang and a deadly martial arts assasin who will stop at nothing to get it for them.

Magnum returns from a case to find that Higgins' old Army commander is staying on the Masters estate, under tight security, until some I.R.A. members he helped capture are tried. Two secret intelligence agents hire Magnum to protect the brigadier and foil assassins out to kill him before the terrorists' trial, but the "need to know" basis the agents insist on operating by only serves to complicate matters for Magnum.