A reputed treasure diver is found murdered. The valuable Spanish coins found in his home, which must stem from one of the most wanted wrecks, are however fake, and he was secretly working for a world-famous salvager, whose reputation is at stake. But several small shrimps in the story also hide the truth. Trough the victim's family past, the team discovers why he was obsessed with a Honoluly raid-sunk warship, a veteran's casket and a fortune in war-stamped banknotes. Steve meanwhile discovers that his former mentor Joe White tried to prevent him finding out the truth about father McGarrett's fatal past.
—KGF Vissers