Hunters are a special breed, dedicated to tracking down treasures, magical beasts, and even other people. But such pursuits require a license, and less than one in a hundred thousand can pass the grueling qualification exam. Those who do pass gain access to restricted areas, amazing stores of information, and the right to call themselves Hunters.

The princes begin to move against each other as the Succession War continues on the Whale Ship when Second Prince Camilla attempts to assassinate First Prince Benjamin. Meanwhile, something fishy is going on in Thirteenth Prince Marayam's room. The Spiders appear and make their move as well! Will Kurapika be able to keep up with the madness and murders taking place on the ship?!