Every individual possesses the latent energy and potential of Nen, a concealed source that can bestow immense strength upon those who master it. With the ability to access both boundless illumination and boundless darkness, the Hunter Association was formed to regulate and manage its usage. Hunters, of various shapes and sizes, possess a mastery of Nen that allows them to pursue their desires for wealth, power, and personal aspirations. Isaac Netero, as the Hunter Association's chairperson, holds great influence over the community. Having already immobilized Jed, a Nen master who had mastered On - the sinister shadow of Nen - Netero sees himself as the final line of defense against the return of On users at the Heaven's Arena "Battle Olympia" competition. His success in protecting the Association and the world from the threat of hatred and retribution depends on his ability to seek out assistance from any possible source.