Archaeologist Charles Underwood, supervising a dig on the main island, finds himself roused from sleep by a mysterious intruder trying to steal his journal. A day later, he's dead, floating in a bay about a mile from the dig. Did traditionalists who wish to preserve the location of King Kamehameha's burial site silence him before he could find it? Or was some other motive at play? McGarrett's determined to find out, but to do so, he'll need the help of a kahuna - a Hawaiian cleric.