Magnum, TC and Nuzo had escaped from a North Vietnamese POW camp during the Vietnam War. Nuzo returns to Hawaii and tells TC that the brutal Russian Colonel who was at the camp has returned to the U.S. and is going to kill him.
The Poison God's Ki'i, a wooden Polynesian God image, was found in a cave in Hawaii. Unless it is returned to the cave, anyone who comes in contact with it will die.
A Japanese Samurai warrior brings an antique plate to Hawaii that Robin Masters had purchased. The Samurai is attacked, the plate is stolen and Robin wants TM to recover it.
Two Japanese-Americans who were interned on Sand Island in January 1942 witness two soldiers beating a fellow Japanese internee to death. This incident causes repercussions today.
A single engine light aircraft being flown from California to Hawaii crashes into the tidal pool at the estate. Turns out the pilot is a man from Magnum's war days.
Higgins' half brother, an Irish Catholic priest from Northern Ireland, arrives in Hawaii to confront a British officer who he claims stole an ancient artifact from his church.