Mito gives Gon an iron box that Gon"s father, Ging, left to him. But instead of providing clues to his father"s whereabouts, what"s inside only leads to more mysteries. While Gon and Killua head to Yorknew City, Kurapika gets a job with the mafia that soon brings him into conflict with the powerful Phantom Troupe at the underground auction. When Gon and Killua witness the members" overwhelming strength, they decide to shadow them to find out more, but the Phantom Troupe is one step ahead.